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										Avoiding Stains and Discoloration 
										every time water is added!!! |  
						
										| If 
										there is a possibility that new water 
										additions will contain sediments, 
										dissolved metals or contaminants, you 
										should consider using something to 
										pre-filter the new water.  Test your 
										source water for iron, copper and 
										manganese, to determine, if dissolved 
										metals present a potential problem.  It 
										is better to avoid a problem, than to 
										try and treat it, after the water has 
										been added to the pool.  The products 
										below can remove sediments, metals such 
										as iron, copper and manganese and 
										contaminates such as sulfur.  The
										
										MetalTrap 
										Filter attaches to the garden 
										hose and removes dissolved iron, copper 
										and manganese.  The 
										MetalTrap 
										1-Micron Filter removes 
										ultra-fine contaminants, including 
										sulfur.  The 
										MetalTrap 
										Dual-Cartridge Filter attaches 
										to a garden hose and removes dissolved 
										heavy metals and sediments.  One 
										cartridge is washable and reusable and 
										the other is replaceable. |  
						
										|  |  
						
										| Click on 
										any of the above links, to see the 
										complete selection of treatment 
										products.
 ► ► ► 
										Scroll down to 
										read through some Question and Answer 
										information. 
										◄ ◄ ◄
 
 |  
						
										| Removing Stains and Discoloring Metals, 
										from the water!!! |  
						
										| Look for the presence of 
										rusty, tan, blue, green, purple, gray, brown 
										or black stains.  These are typically 
										due to the presence of heavy metals, 
										such as iron, copper or manganese.  Even 
										if there is no obvious staining, the 
										presence of heavy metals will cause 
										water discoloration and possible 
										staining, after chlorine or bromine are 
										added or the pH is raised.  Depending 
										upon the severity of the problem, the 
										products below can help you eliminate or 
										avoid problems.  The 
										Stain Reversal 
										Kit contains everything needed 
										to remove the metal stains, eliminate 
										the heavy metals and help prevent a 
										recurrence, of the problem. The 
										Stain Remover 
										removes iron copper and manganese 
										stains. 
										Pool 
										Refresh-Total Trap helps 
										eliminate heavy metals and phosphates, 
										by filtering or vacuuming them out of 
										the water. |  
						
										|  |  
						
										| Click on 
										any of the above links, to see the 
										complete selection of models.
 ► ► ► 
										Scroll down to 
										read through some Question and Answer 
										information. 
										◄ ◄ ◄
 
 |  
						
										| Optimizing the water chemistry and 
										improving water clarity!!! |  
						
										| Test the water chemistry and 
										adjust the pH, total alkalinity, calcium 
										hardness and cyanuric acid, as might be 
										necessary.  A 
										
										ColorQ, All-Digital Tester can 
										perform all of the common spa water 
										tests and eliminates the color-matching 
										and guesswork.  Some tester models, 
										such as the #2067 ColorQ PRO 9-Plus, 
										perform all of the common water tests, 
										plus copper and iron.  Reliable 
										water testing will help get the spa 
										ready-to-go.  Better Circulation helps 
										make everything work more effectively.  
												
										
										
										An easy-to-install,
										Magnetic 
										Water Conditioner
										
										
										can help mitigate some the the scaling 
										issues, associated with high calcium 
										hardness.  An 
										Automatic Filter 
										Cartridge Cleaner will 
										thoroughly remove the debris between the 
										pleats, assuring that all 
										metal-containing sediments are washed 
										away. |  
						
										|  |  
						
										| If you have a pool or spa water 
												testing need, we should have the 
												product.
 ►
												
												
												Scroll down to read through some 
												Question & Answer information.
												
												
												◄
 
 |  
						
										| How to treat 
										iron, copper, manganese discoloration or 
										staining? |    
								Dissolved heavy metals present, in spa or hot tub water, can lead 
								to staining of the underwater surfaces, 
								discoloration of the water or the appearance of 
								blue to green, purple, gray or dark to black colored spots. Control of trace 
								minerals, such as heavy metals and sulfur, and maintaining a proper overall spa or 
								hit tub water chemistry is important, to help 
								assure optimum water quality. Minerals such as 
								iron, manganese and copper are the principal 
								offenders. Iron and manganese can occur 
								naturally in water, especially well water. It is 
								the oxidation of dissolved heavy metals that can 
								cause the spa staining and water discoloration 
								problems, upon the addition of oxidizing spa 
								chemicals. Copper is rarely found in municipal 
								water supplies and usually finds its way into 
								spas and hot tubs as the result of corrosion of 
								the copper heater core or copper plumbing. 
								Treatment of the resultant problem is usually 
								possible with the proper techniques and 
								chemicals. Heavy metal staining and 
								discoloration can be removed, treated and 
								prevented, with the use of 
								METALTRAP Products, 
								such as Liquid METALTRAP, 
								METALTRAP Filters, 
								METALTRAP 1-Micron Pre-Filter and 
								POOL REFRESH.  
								When the new source water contains sediments, a 
								METALTRAP Dual-Cartridge Filter can removes both 
								the precipitated metals, as well as the 
								dissolved metallic ions, greatly reducing the 
								risk of staining and discoloration.  When 
								well water is the source, there is a strong 
								likelihood that problems will arise, unless a 
								proper course of action is followed.  If 
								problems arise, refer to the
								Spa Problems 
								Page, as a source of problem-solving 
								information, broken down into various 
								categories.  Scroll down the page and click on the linked
								keywords,
								catch phrases 
								or images, in the archived answers below, to access additional information, on that topic or product. Do you know what's in 
					your water?  If you're having problems, with stains 
					and discoloration, due to the presence of metals, you should 
					be testing for iron and copper, to better understand the 
					extent and cause of the problem.  This helps select the 
					best treatment option.  Understanding the nature of 
					the problem, should be step one.  For information 
					about our full selection of testing options, visit our
					Test Equipment Store.  
					For information about treatment options, visit our
					Stain Treatments Store. 
										
											
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								| ▼   
								 Helpful, 
								Problem-Solving Information, in a question and 
								answer format. 
								    
								▼ |  
						
							
								
									
											
											► 
									Treating Iron Stains, When Using A Mineral 
									Sanitizer? 
									
									I have a 2004 model 
									spa.  I use a Mineral Spa Sanitizer and 
									change the water every 3-4 months.  In 
									the past 6 or 7 months, I’ve started to get 
									rust stains on the spa surface near the 
									continuous circulation outlet (the outlet 
									where ozonator bubbles come out).   
									What is the likely source this staining. 
									Thanks.
 Keith, 1/27/2018
 
  What you are describing sounds like iron.  
									Possibly, it is present in the source water 
									used to fill the spa.  The fact that you are 
									using 
									a mineral purifier limits the treatment 
									options.  Adding a stain remover and a 
									chelating agent will eliminate the stains, 
									but it will inactivate the metallic ions, 
									from the mineral purifier.  You should clean 
									the spa with some 
									MetalTrap Stain Remover and drain 
									completely.  Attach a
									MetalTrap Filter 
									to the garden hose and refill the spa.  
									As water passes through the cartridge-like 
									MetalTrap Filter, iron and other heavy 
									metals will be removed.  A MetalTrap 
									MT-10 Filter will remove up to 1 PPM of 
									metals, from 10,000 gallons of water.  
									The MetalTrap Filter should be used, 
									whenever new water is added, and will 
									last for years.  I hope that I have 
					provided the solution.
 
 Sincerely, Alan Schuster, 1/27/2018
 
 
											
											► 
									Underwater Stains and More? 
									
									I have a 375 gallon spa and have noticed 
									considerable calcium build up on the walls 
									of my spa. I just drained and cleaned the 
									spa and could not get much of the calcium 
									off the walls and jets. I have noticed that 
									after about two months, the spa water, while 
									clear when still, turns milky when the air 
									is on. The calcium hardness right now is at 
									about 100.  What can I do to get the 
									stains off the walls and jets next time I 
									drain and clean the spa and how can I keep 
									the water from turning milky after about two 
									months? You 
							seem to have several things going on.  With a 
							calcium hardness of 100 PPM, there should be no 
							scaling.  The cloudy water is probab ly the result 
							of silt, being raised from spa floor.  You might 
							need a new filter cartridge, to improve filtration.  
							The stains could be due, to iron.  Calcium scale is 
							not colored.  Have the spa and source water tested 
							for copper and iron.  Stains can be removed with a
							MetalTrap stain Reversal kit.  
							If the source water 
							contains copper or iron, I 
							suggest using a MetalTrap 
							Filter to treat the water, as it is being added 
							to the spa.  The milky water could be the 
							result of inadequate sanitation.  Are you able to 
							maintain a stable level of sanitizer?  If not, 
							you need to pay more attention to this task.  I 
							hope that this information will be helpful. 
 Sincerely.  Alan 
							Schuster, 1/13/2017
 
 
											
											
											► 
											Treating The Stain And Discoloration 
											Problem The Right Way? 
											
											Hello We have a new hot tub with 
											well water. The first time we filled 
											it, we added the stain and control 1 
											with no concerns, water looked 
											great. Then when we refilled it, the 
											tub looks stained, because when we 
											take a cup of water out of the tub 
											it looks clean. Only difference was 
											that the technician said we don't 
											have to add the stain and control 1 
											till it is 85 degrees or the next 
											day. Could this be the reason for 
											the staining? How quickly are you 
											supposed to put in the bottle? 
											
											Cal, 11/24/2016 
											What 
											you were told makes no sense.  
											Waiting only assures that staining 
											and discoloration are more likely to 
											occur.  At the 
											very least, I would have told you to 
											add the metal treatment, as the spa 
											is being filled, so that it can 
											react before staining or 
											discoloration can take 
											place.  You will face this 
											problem, every time you add water or 
											refill the spa.  It is not a 
											one time only problem, but is an 
											ongoing concern.  Some metal 
											treatments don't fare well, over 
											time, and allow for a recurrence of 
											the problem.  Avoiding the 
											problem is a better strategy.  
											Attaching a 
											MetalTrap Dual-Cartridge Filter, 
											to the hose used to fill the spa, 
											will remove dissolved metals and 
											sediments, before the water is added 
											to the spa.  It is a one-time 
											investment, that can provide 
											effective mineral removal, for years 
											of refills and top offs.  
											Avoiding the problem always tops 
											treating the problem.  If the 
											spa walls are stained, I would add 
											some MetalTrap Stain Remover and 
											drain and clean the tub.  
											Afterwards use the MetalTrap 
											Dual-Cartridge filter to refill the 
											spa.  This filter comes in 3 
											sizes and each will remove up to 1 
											PPM total, of copper, iron and 
											manganese, from its rated volume.  
											If the total metals content is over 
											1 PPM, it will treat proportionately 
											less water.  The metals 
											removing cartridge is replaceable.  
											The other cartridge removes 
											sediments and is washable and 
											reusable.  The smallest size 
											might be OK, but having a spare 
											metal removing cartridge might be a 
											good idea.  I hope 
											that this information is helpful. 
											
											Sincerely.  Alan Schuster, 
											11/24/2016 
											
											
											► 
											What To Do About Hard Water And 
											Sanitizing?
 
						
							
								
								
								What is the best spa treatment for health 
								generally and for hard water specifically? Thank 
								you. 
								
								Laura M., 2/14/2018 
									
										
											
												
													
														
															
																
																	
																	How hard is 
																	hard?  Over 
																	400 PPM and 
																	calcium 
																	hardness 
																	problems 
																	need to be 
																	addressed.  
																	If you can, 
																	by all means 
																	use the 
																	softened 
																	water, if 
																	your water 
																	is of poor 
																	quality, is 
																	very hard or 
																	could 
																	contain 
																	dissolved 
																	metals.  
																	Otherwise, 
																	you could be 
																	in a heap of 
																	trouble.  
																	After the spa is filled 
																	take a 
																	sample into 
																	a local 
																	dealer for a 
																	water 
																	analysis.  
																	You will 
																	need to 
																	adjust the 
																	calcium 
																	hardness, 
																	total 
																	alkalinity 
																	and the pH 
																	to 
																	compensate 
																	for the use 
																	for softened 
																	water.  Once 
																	done, it 
																	should be 
																	treated like 
																	any other 
																	spa.  Not 
																	all water 
																	softeners 
																	can remove 
																	iron and 
																	other heavy 
																	metals.  You 
																	could use
																	
																	Liquid 
																	METALTRAP 
																	to treat any 
																	iron present 
																	or use the
																	
																	METALTRAP 
																	Filter 
																	to actually 
																	remove the 
																	iron, from 
																	the water.  
																	If you don't 
																	have soft 
																	water 
																	available, 
																	you should 
																	try to keep 
																	the pH 
																	closer to 
																	7.2, but not 
																	below.  
																	Adding a 
																	calcium 
																	scale 
																	treatment 
																	can help.  
																	The
																	
																	Magnetizer 
																	is a device 
																	that helps 
																	to minimize 
																	issues, 
																	resulting 
																	for high 
																	hardness.  
																	It simply 
																	attaches to 
																	a pipe. 
																	 
																	Your 
																	best options 
																	are chlorine 
																	(dichlor or 
																	lithium) or 
																	bromine, 
																	along with 
																	something to 
																	help to 
																	reduce the 
																	amount used.  
																	Controlling 
																	usage helps 
																	to avoid 
																	further 
																	chemical 
																	build ups 
																	and lessens 
																	the downside 
																	of high 
																	calcium 
																	hardness.  
																	Adding an 
																	ozonator 
																	can help 
																	reduce 
																	chlorine or 
																	bromine 
																	usage and 
																	make pH 
																	control 
																	easier.  In 
																	place of 
																	chlorine, 
																	you could 
																	use a salt 
																	chlorine 
																	generator.  
																	There are 
																	several 
																	automatic 
																	models, as 
																	well as 
																	others that 
																	require no 
																	installation. 
																	
																	
																	I hope that 
																	I have been 
																	helpful.  If 
																	so, please 
																	tell your 
																	friends and 
																	dealers 
																	about the 
																	website. 
																		
																			
																			
																			
																				
																					
																						
																							
																							
																								
																									
																									
																										
																											
																												
																													
																														
																															
																																
																																	
																																	
																																		
																																			Sincerely.  Alan Schuster, 2/14/2018
 
											
											► 
					Black Ring Around The Tub?
 We 
					have not used our vinyl-lined hot tub for a number of months 
					but it has been running and we have added chemicals and 
					dichlor as needed. However it has developed a Black Ring at 
					the waterline, which we cannot remove from the vinyl liner.  
					We are changing the water, have used a spa cleaner, to clean 
					the plumbing etc.  However, the Black Ring is resisting 
					all attempts with cleaning pads, cleaning products and 
					baking soda, to remove it. Any help would be great. The hot 
					tub is about 9years old.  Thank you.
 
					Graham 
					S., 1/6/2015
 Most likely the water contains copper, iron and other 
					minerals. Test the tap water used to fill the spa for copper 
					or iron, which are associated with
  stains. Copper can also be the result of heater corrosion, 
					due to a low pH. Some mineral sanitizers can add copper, as 
					well. The metals in the spa water may have precipitated onto 
					the walls and resulted in stains and discoloration, which 
					are rarely removed by simply adding a metal treatment or 
					using common cleaners. Try this. Make a paste of some 500-mg 
					vitamin C tablets and rub onto a stained area. If this 
					works, the problem is positively due to metals.  Add 
					1/2 pound of MetalTrap Stain Remover 
					in a white sock, shut off the filter and scrub the walls. If 
					the stain is removed, repeat elsewhere, as needed. ADD A 
					DOSE OF Liquid METALTRAP FOR 
					EVERY 0.5 PPM OF IRON OR COPPER. Liquid METALTRAP is 
					phosphate-free and does not lose effectiveness at a pH of 
					7.8 or higher, as do most other metal treatments.  If 
					the stained area is too broad to be treated with the "sock", 
					it may be necessary to lower the pH to 6.8, discharge all of 
					the chlorine and add 1/2 pound of ascorbic acid. Wait 
					24-hours, after the addition of Liquid MetalTrap, before 
					restoring the chlorine level. Thereafter add a dose of 
					Liquid METALTRAP monthly or prior to adding new water, in 
					order to avoid a recurrence.  I hope that I have been 
					helpful.  If so, please tell your friends and dealers 
					about the website. 
 Sincerely.  Alan Schuster, 1/6/2015
 
 
 ► 
					The Best Way To Treat Well Water?
 
					We have just 
					purchased a new spa and have already gone through the hassle 
					of filling it with well water (big mistake!)  For the past 
					month or so I have been playing the filtering game, cleaning 
					iron covered filters, adding special chemicals to clarify 
					etc. etc.  I plan on getting my water shipped in the 
					next time we drain and fill the tub.  However, I would like 
					to be able to "top off" in between draining and filling.  My 
					thought was to purchase the METALTRAP 1-Micron Pre-Filter, 
					for Spas & Small Pools Item # PS-SF and the Liquid Metal 
					Trap, 1-Quart Bottle Item # LMT-10.  Is this the best 
					approach, or is there something better that I should be 
					using?  Any advice would be greatly appreciated!  
					Thanks in advance.
  Todd D., Geneva, Ohio, 
					10/17/2014
 
						
							The 
							1-micron will not remove the dissolved metals, just 
							the sediments.  A MetalTrap 
							Dual Cartridge Filter System will remove both 
							the sediments and 
							the dissolved metals.  Add a few ounce of
							Liquid MetalTrap before 
							adding chemicals, for added insurance.  The sediment 
							cartridge is washable and reusable.  The MetalTrap 
							cartridge is replaceable.  You should get many years 
							of use, out of the product.  All you have to do is 
							attach it to the garden hose.  I hope that this will 
							help solve the problem. 
							Sincerely.  Alan Schuster, 10/17/2014 
											 
					► Stain Ring 
					Around The Spa?
 
 We have a spa in Illinois that is 
					almost a year old. We took care of it over the summer as 
					directed and just drained cleaned and filled it for fall. 
					After adding some ph decreaser and starting some testing we 
					noticed a rust colored ring forming we go it off, and did 
					some more testing and it came back. We are currently 
					draining again to refill. Can you help tell us why this 
					happened?
 
 Amy S., Illinois, 9/17/2013
 
 Most likely the water contains iron and other minerals. Test 
					the tap water used to fill the spa for iron, which is 
					associated with rust colored stains. The metals in the spa 
					water may have precipitated onto the walls and resulted in 
					stains and/or discoloration. Another option
  would be to use 
					the METALTRAP Filter, as it can remove metal, before they 
					get into the spa. The stains/discoloration are probably due 
					to iron, copper and other trace minerals and are rarely 
					removed by simply adding a metal treatment. Try this. Add 
					1/2 pound of MetalTrap Stain Remover in a white sock, shut 
					off the filter and scrub the walls. If the stain is gone, 
					repeat elsewhere, as needed. ADD A DOSE OF 
					Liquid METALTRAP 
					FOR EVERY 0.5 PPM OF IRON OR COPPER. Liquid METALTRAP is 
					phosphate-free and does not lose effectiveness at a pH of 
					7.8 or higher, as do most other metal treatments. At the 
					very least add two doses. If the stained area is too broad 
					to be treated with the "sock", it may be necessary to lower 
					the pH to 6.8, discharge all of the chlorine or bromine and 
					add 1/2 pound of MetalTrap Stain Remover. Thereafter add a 
					dose of Liquid METALTRAP monthly or use the MetalTrap 
					Filter, prior to adding new water, in order to avoid a 
					recurrence. I hope that this information will prove helpful. 
 Sincerely.  Alan Schuster, 
											9/17/2013
 
											
											
											► 
											Pre-Treating For Manganese? 
											
											I am confused. I want to filter the 
											water coming from the hose, for 
											manganese and minerals? I have a 200 gallon 
											spa. Do I just need the pre-filter 
											that attaches to the hose, or do I 
											need something else also? Thanks.
 Terry K., 4/13/2016
 
											The
											MetalTrap 
											Pre-Filter will remove fine 
											mineral sediments and particulates, but will 
											have no effect on the dissolved 
											manganese, copper or iron.  These 
											any dissolved heavy metals are not 
											removed, they will lead to staining 
											or discoloration, after reacting 
											with chlorine or other oxidizers.  
											If you have sediment-free water, you 
											should use a 
											MetalTrap Filter to treat all 
											new water additions.  Even the 
											smallest size, will last for years, 
											as it can remove up to 1 PPM of 
											metals, from 10,000 gallons of 
											water.  However, if sediments are 
											present, you should use the
											MetalTrap 
											Dual-Cartridge Filter.  The 
											first cartridge removes the 
											sediments and is washable and 
											reusable.  The second cartridge 
											removes any dissolved heavy metals, 
											such as iron, copper and manganese.  
											This cartridge can be replaced, but 
											not reused.  It can remove up to 1 
											PPM of heavy metals, from 28,000 
											gallons of water, so it should 
											provide many years of being able to 
											treat water used to refill the spa.  
											In the long run, it is better to 
											properly treat the problem and avoid 
											the staining and discoloration.  I 
											hope that this has been helpful. 
											
											Sincerely.  Alan Schuster, 
											4/13/2016
 
 ► Using The 
					Right Pre-Filter?
 
 I bought a pre-filter (carbon). The 
					vendor told me it was good for about 3 refill of my spa (450 
					gallons). I used it once and it doesn't work anymore (water 
					don't go through anymore), but my water has never been so 
					clear! I think I have a lot of copper in my water because it 
					was always green when I filled it before using that 
					pre-filter. I'm thinking buying the "MetalTrap 1-Micron 
					Pre-Filter, for Spas & Small Pools". Do you think it will be 
					usable for a couple of refills? I know it says 10 000 
					gallons, but I want your opinion on it.
 
 Isabelle E., Canada, 10/27/2009
 
 The METALTRAP 1-Micron Pre-Filter will remove ultra-fine 
					particles and many microorganisms. It is particularly useful
  where the source water is of poor quality. It should be able 
					to be used to refill your spa up to 20 times, depending of 
					the nature of the source water.  However, your description 
					of the water color and the mentioning of a copper 
					possibility, leads me to question, whether a 
					METALTRAP 
					Filter would not be a better choice. The METALTRAP 
					1-Micron Pre-Filter will remove the metals that have 
					precipitated, but not those in solution. The "green" color 
					could be copper or iron or both. The METALTRAP Filter will 
					remove all the dissolved metals, and will save you from having to 
					deal with discolored water and stained surfaces. The 
					METALTRAP MT-10 should be able to be used up to 20 times to 
					refill the spa. You can always test the water, before and 
					after, to confirm the Filter is still effective. The best 
					way to deal with metals is to physically remove them from 
					the water and not with chemical treatment. I hope that this 
					information will problem helpful. 
 Sincerely. Alan Schuster, 10/27/2009
 
 
 ► Well Water 
					Containing Sulfur?
 
 I observed floating particles in our 
					hot tub. The flakes are yellow in color, have the texture of 
					dead skin and can be up to half an inch in size in some 
					cases. We use water direct from our well which contains 5 
					ppm of sulphur. When I asked our local dealer about the 
					problem, he stated that this is due to the sulphur attacking 
					the lining of the rubber hose plumbing. The sulphur 
					eventually lifts off flakes of the hose which take on the 
					color of the sulphur. He said that the remedy for this is to 
					use a stain control product which keeps the sulphur 
					particles suspended (sequestered) in the water thus keeping 
					the sulphur from etching the rubber lining. He said that 
					this can begin to occur after about sixteen months of use 
					which makes sense in our case. I have begun the use of the 
					stain control and will continue to observe for improvements. 
					Have you ever seen this condition or heard of this remedy?
 
 Dennis, Canada, 1/12/2009
 
  You can't sequester sulfur. But there is a solution. The 
					METALTRAP 1-Micron Pre-Filter will remove lots of the 
					minerals that cause odors and discoloration. Use it every 
					time you fill the spa and you'll save yourself a lot of 
					problems.  If this is the only source of water, I would 
					bring in a sample of fresh water and have it tested for pH, 
					TA and calcium hardness. I would allow the chlorine level to 
					reach zero, add a 1/4 pound of METALTRAP Stain Remover and 
					let the water recirculate for at least 12 hours. Drain and 
					clean the spa. Use a METALTRAP 1-Micron Pre-Filler to treat 
					the new water, as the spa is being refilled. Always 
					pre-filter new water. Adding a monthly dose of calcium 
											scale treatment is a good idea, if the hardness level is over 
											400 
					PPM. For best results drain and clean the spa, every 3-4 
											months.  I hope that this information will prove helpful.
 
 Sincerely. Alan Schuster, 1/13/2009
 
 
 ► Is It Black 
					Algae?
 
 I have read all the problems submitted 
					by others. Our discoloration is mostly dark green with many, 
					mottled black spots. The green looks like oxidized copper. 
					Is it still considered "black algae"? If so, what do you 
					recommend?
 
 Alan G., 6/16/2010
 
  It is extremely unlikely that the problem is black algae! It 
					could very well be a copper stain that resulted from 
					corrosion of the copper heater core. Ask your self the 
					following questions? Is chlorine or bromine being used? Has 
					the pH been below 7.0, for extended periods of time? Are you 
					placing chlorine or bromine in the skimmer? I suggest that 
					you have the water tested for copper. If present, that will 
					conform the corrosion. You will have to treat and clean the 
					spa. METALTRAP Stain Remover can be used to remove stains. 
					After the removal, either drain and rinse the spa or add a 
					dose of Liquid METALTRAP. If corrosion was the cause, you 
					need to pay more attention to the pH and total alkalinity of 
					the spa water. I hope that I have been of assistance.
 
 Sincerely. Alan Schuster, 6/10/2010
 
											
											
											► Discolored 
					Water?
 I have a 275 gallon spa and recently I 
					emptied, cleaned and refilled the spa. I added the chemicals 
					(bromine) in the usual way and the spa water started to turn 
					brown in color. I brought a sample into a local dealer and 
					he said that it was iron. It never happened before. Can you 
					explain this?
 
 M. L., 12/17/2016
 
  Where did the iron come from? That's the real question. If 
					iron is not normally present in your household water on a 
					regular basis, it might have ended up in your spa water 
					because a fire hydrant was opened somewhere, up line, in the 
					neighborhood. That caused sediments to be lifted off the 
					bottom of the pipes and the rest you know. It is also 
					possible that your water does contain an occasional trace of 
					iron, depending upon the conditions at the water source, 
					rainfall amounts, etc. Knowing the amount of iron present is 
					helpful. Make sure that you add a quality metal treatment, 
					such as Liquid METALTRAP, in sufficient quantity, for the 
					amount of iron present. Add another dose monthly and prior 
					to the addition of makeup water. The hope that this 
					information cleared things up for you.
 
 Sincerely. Alan Schuster, 12/7/2016
 
 
 ► Water 
					Turned Purple?
 
 I just changed the water in my hot tub 
					and it is purple. I've had the spa for 5 years and this is 
					the first time anything like this has happened. The water 
					came out of the faucet clear and after I balanced it, the 
					water turned purple. The only thing that was done 
					differently this time was I used a pre-filter to eliminate 
					the iron ring after filling. Is the water good and will it 
					clear up? Any help would be appreciated. Thanx.
 
 Mike C., 11/8/2011
 
  Most likely the water contains iron, manganese, copper and 
					other minerals.  Purple suggests manganese and copper. Test 
					the tap water used to fill the spa, as chemicals in the spa 
					water may interfere with the test. The metals in the spa 
					water may have precipitated onto the walls and may not show 
					up in a water sample. A good option would be to use the
											METALTRAP 
											Dual-Cartridge Filter System, as it can 
					remove metals and minerals and contaminants, before they get 
					into the spa. ADD A DOSE OF Liquid METALTRAP FOR EVERY 0.5 
					PPM OF IRON OR COPPER. Liquid METALTRAP is phosphate-free 
					and does not lose effectiveness at a pH of 7.8 or higher, as 
					do most other metal treatments. At the very least add two 
					doses. Thereafter add a dose of Liquid METALTRAP monthly or 
					prior to adding new water, in order to avoid a recurrence. I 
					hope that this information will help clear things up.
 
 Sincerely. Alan Schuster, 11/8/2011
 
											► Only The 
					Spa Is Stained?
 
 I recently purchased an 
					iron test kit 
					from your site, so I'd appreciate a bit more help. Enclosed 
					is a picture of spa water which occurred when the spa person 
					washed the spa filter in muriatic acid and then thoroughly 
					rinsed it. There have been red rust stains on the spa. 
					Cistern water tests "no iron" but water you see in the spa 
					tests 0.3 iron. The spa uses bromine. The pool which uses 
					salt chlorination and shows no rust stains. I've just 
					replaced the spa gas heat exchanger (now cupronickel) and 
					there's no other source of rust. The whole house water 
					filter DOES, however, fill with a reddish material on the 1 
					micron filter we use to filter it out. We believe that the 
					dirt on the hillside in the Virgin Islands (red) has a lot 
					of iron in it. Please answer this: Why does the spa 
					show iron stains and not the pool? Does the bromine 
					precipitate any iron that is in the water? Does salt 
					generated chlorine not precipitate iron so the pool does NOT 
					get stains? Do you think we need a specific iron filter? 
					Thanks.
 
 Norm, Virgin Islands, 4/30/2017
 
 Red colored soil usually is high in iron. There is a 
					possibility that copper is interring with the iron test and 
					is showing up as iron. What I see in the spa are not iron 
					stains. Copper stains from corrosion of the heater core are 
					more likely. The action of chlorine or bromine, upon iron
  or
											copper is virtually the same. Iron stains are yellow to rust 
					colored. Copper stains are blue-green to black. You replaced 
					the heater coil, why? The pool operates with a 
											salt chlorine 
					generator and low pH is rare, because the SCG drives up the pH. 
					Bromine or chlorine will not attack copper unless the pH is 
					acidic. Most likely the pool's pH is always around 7.8 or 
					higher. The spa is using bromine and bromine tablets are 
					acidic. If the pH drops below 7.0, corrosion and staining 
					could result. The photo seems to show that. If you used 
					bromine tablets and did not add pH Increaser on a regular 
					basis, your pH was too low. I think you need to do the 
					following. Add several doses of phosphate-free, 
					Liquid 
					METALTRAP, to the pool and spa. Add another monthly. Use a 
					METALTRAP Filter, while adding any new water to the pool or 
					spa, to help remove particulated iron. For cleaning of the 
					spa stains try using a solution of METALTRAP Stain Remover. 
					Refer to the page on pool staining problems, for more on this 
					topic. I hope that this information is helpful. 
 Sincerely. Alan Schuster, 4/30/2017
 
 
 ► Turned 
					Brown?
 
 We were changing the water and we 
					added the calcium hardness treatment. Then we add the 
					bromine and it turns brown. We have changed the water 
					regularly and this has never happened before. What is wrong?
 
 Linda M., 4/15/2007
 
 This sounds like a spa, but you didn't make that clear. 
					Either way, everything applies. Pools/spas that turn color 
					after bromine h
  as been added usually have a metals problem. 
					This can be very common with well water. ASAP add at least a 
					double dose of a quality metal Treatment, such as 
					phosphate-free, Liquid METALTRAP. This might help avoid 
					staining and should make an improvement. Bring in a water 
					sample to a local dealer and have the water tested for iron, 
					copper and other parameters. I suggest adding a dose of 
					metal treatment for each 0.5 PPM of metals. Add another dose 
					prior to adding new water. A monthly dose is an additional 
					safeguard against a recurring problem. To help avoid such 
					problems, I suggest using a metal removing pre-filter It can 
					remove much of the metal content and help avoid such 
					problems. I hope that this information proves helpful. 
 Sincerely. Alan Schuster, 4/17/2007
 
 
 ► Black 
					Spots?
 
 My spa and pool are 4 years old. I 
					have been treating my spa for what I thought was Black Algae 
					for the last five weeks. The temperature finally cooled off 
					so I could empty it and scrape off a sample. I took the 
					sample to the pool supply place and they determined it was 
					metallic. There are two spots, about the size of silver 
					dollars, on the side of the spa. What could be causing this? 
					Thank you.
 
 Jake G., 10/29/2008
 
  The 
											stains could be the result of 
											copper, in the presence of high 
											levels of calcium hardness. The 
											copper could have come from 
											corrosion of the heater. Assuming 
											that the spa and pool are gunite, 
											try putting about 1/2 pound of pH 
											reducer in a sock and place on a 
											spot. Leave in place for about 30 
											minutes. Hopefully, this will 
											dissolve the upper layer of plaster 
											and remove the stain. Sometimes, it 
											is necessary to use
											METALTRAP Stain Remover for this 
					purpose. Sometimes black spots form, as a result of the use 
					and abuse of calcium chloride in the plaster mixture. This 
					problem was well described in the 1/15/03 issue of Service 
					Industry News (Carlsbad, CA). If this is the case, there is 
					nothing that is known to eliminate the problem, short of 
					refinishing. I hope that the information will prove helpful.
 
 Sincerely. Alan Schuster, 10/29/2008
 
											
											
											► Green Gunk?
 We have a fiberglass spa (500 gal) and 
					it has developed green "gunk" (for lack of a better 
					description). This stuff is in small chunks and adheres to 
					the sides of the tub, our suits, of course it's filling the 
					filter and it's covering the plastic parts of the filter. If 
					it lands on anything while hosing out the filter, it sticks 
					like glue.  It can be scrapped off the tub and filter. What 
					caused it and how do we get rid of it? We switched from 
					bromine to chlorine, could that have caused it? We drained 
					and cleaned the tub and filter before switching. Thanks.
 
 Kay and Jim, Florida, 3/10/2012
 
 This "green gunk" could be copper, resulting from corrosion 
					of the filter. Not a good thing! Have you been failing to 
					maintain the p
  H at 7.2-7.8? Low pH conditions will corrode 
					the copper heater core, in the presence of chlorine or 
					bromine. Chlorine tablets should not ever be used in
					a spa, 
					especially not in the skimmer. I suggest that you have the 
					water tested for copper. If present, it is the result of 
					corrosion and low pH. Add a double dose of a quality metal 
					treatment, such as phosphate-free Liquid METALTRAP, and make 
					sure that the pH is 7.2-7.8, at all times. You might be 
					better off draining the spa, if my assumptions are correct. 
					Otherwise, get back to me with the actual water analysis 
					results and the type of chemicals being used. Have you ever 
					considered an ozonator? It will make spa maintenance easier 
					and produce better water quality, with fewer chemicals. I 
					hope that this information will prove helpful. 
 Sincerely. Alan Schuster, 3/10/2012
 
 
 ► Blue 
					Stains?
 
 I have some blue-colored stains near 
					some jets and on the bottom. Could this have been caused by 
					copper? The spa is about 300 gallons and is about 12 years 
					old. I use bromine tablets and a non-chlorine shock. Is 
					there anything that I can do? Thanks.
 
 Anthony N., VT, 10/30/2010
 
 The blue-colored stains are probably due to copper. The 
					likely source is from your heater. If you're lucky, the 
					damage to the heater was not serious. You didn't mention 
					that there was any discoloration of the water, so I will 
					assume that there was none. That being
  the case, you 
					probably don't have much copper in the water. A 
					Copper Test 
					should confirm this. To avoid staining, I suggest that you 
					add a dose of a quality Spa Mineral Treatment, such as 
					phosphate-free, Liquid METALTRAP, to the spa water. The next 
					time that the spa is emptied, try cleaning the stained areas 
					with a solution of METALTRAP Stain Remover. Make sure that 
					you use rubber gloves and eye protection. Rinse any metal 
					parts with water, to remove the chemicals and the dissolved 
					stains. Rinse spa clean before it is refilled and don't 
					forget to add a dose of the Liquid METALTRAP, as it is 
					being refilled. The cause of the copper problem was probably 
					due to corrosive, low pH conditions. In the future, make 
					sure that the pH remains in the 7.2-7.8 range. To help 
					stabilize the pH, the total alkalinity should be 80-120 PPM. 
					I hope that I have been helpful. Keep enjoying the spa. 
											 Sincerely. Alan Schuster, 10/30/2010
 
 ► Stain 
					Removal In Pool-Spa Combo?
 
 I have a large in-ground pool/spa, 7 
					years old, kidney shaped, about 30,000 gallons. It has had a 
					Copper Ionization + ozone system on it for about 5 years. 
					Over the years, the pool service did not maintain the pH 
					properly and the pool has developed gray stains. A drain and 
					acid wash is recommended by my pool service but I am 
					reluctant to proceed due to the expense and the impact it 
					has on the pool surface finish. My pool technician, has 
					suggested that he has been successful in treating stains 
					like these with the addition of Muriatic acid to the water. 
					I am willing to give this process a try as it appears cost 
					effective and should not damage the finish. I would like to 
					try the treatment on the spa first, and see if it is 
					successful. If yes, than I would like to do it to the whole 
					pool. What are the pros and cons to this approach? How much 
					Muriatic acid needs to be added for success? My spa is 8 
					feet in diameter. How many gallons of acid for the 30,000 
					gallon pool? How long should I let this circulate? Are there 
					different strengths of Muriatic acid? Which one should I 
					use? What is the best way to restore the water chemistry 
					after this operation? Thanks.
 
 M.B., 10/24/2007
 
 A pool or spa be subjected to an acid bath as a means of 
					stain removal. Basically it dissolves the top surface and 
					hopefully tak
  es the stain with it. Lowering the pH will 
					subject the metal parts to corrosion, including the heater, 
					if chlorine or bromine are present. Therefore, treatment 
					should be in terms of a short period of time - a day or 
					less. This is important to help minimize the possibility of 
					excessive surface etching. You have to add enough acid to 
					lower the pH just below 7.0. A pH of 
					about 6.8 should suffice. Use the brush to scrub the 
					surface. Bypass the heater, if possible. A better and safer 
					method is to use the METALTRAP Stain Removal System. Once 
					the discolorations and stains are removed, use 
					The METALTRAP 
					Filter, for all future water addition and the problem should 
					not recur.  Restore the pH and TA. Because the addition of 
					the metal treatment will interfere with the copper being 
					introduced by the ionization unit, I would recommend using a 
					polymer algaecide for a month or two, while the copper ion 
					content is re-established. I hope that this information 
					proves helpful. 
 Sincerely. Alan Schuster, 10/24/2007
 
									
						
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