I keep getting iron stains. Ferric iron, for example, is not as easy to sequester as ferrous iron. Remove localized stains with muriatic acid and a scrub brush. Removing rust stains. HASA 76121 Super Stain Out, Quart. How To Get Rid Of Brown Algae In Your Pool Vacuum and Brush. Remove stains. Best Sellers in Swimming Pool Stain Removers Jack's Magic Power Blue Water Line & Tile Cleaner (1 gal) United Chemicals PST-C12 Pool Stain Treat, 2-Pound. Copper, iron, and manganese can be introduced by pool equipment, corroded plumbing, or water sources; Rust pool stains. Swimming pool industry offers iron remover that works effectively to deplete iron levels in your pool waters. Special features include: Removes iron, copper, manganese and rust stains; Eliminates organic stains caused by algae, leaves and stubborn mould It up to those of us who manage and treat water to remove it. Pool operators with iron issues may notice a higher consumption of chlorine, but often it is overlooked. Then we will discuss options for managing iron to prevent problems like stains and excessive chlorine demand. In most cases, the best way to correctly identify a pool stain is to use a stain id kit. Bring the pH, alkalinity, CYA, and hardness in line. If the iron was not yet oxidized in the pipes en route to the swimming pool, it sure will be when it is met with chlorine or a secondary oxidizer like ozone. They just bind metals to prevent oxidation and staining. More on that in a moment. If any of these stains start appearing, it is important that you adjust the alkaline levels of … These problems can usually be treated by adding chlorine and other chemicals to remove the iron from the water. You would need some sort of filter to capture and remove the metals. Shock The Pool. Brush your pool with a wire brush and, if the water is clear enough, vacuum to WASTE. Wait a few hours for the shock to circulate. Usually, iron gets in our swimming pools in a dissolved, soluble state. We could try to explain the chemical formulas and reactions, but you can read these three sources if you are interested in that level of detail. Use A Pool Algaecide. If stains already exist, sequestering and chelation is more difficult because the metals are already oxidized and insoluble. Soluble and colloidal iron: Colloidal iron and soluble iron are both commonly found in swimming pools. Operate your pump and filter settings. Our chelating agent NaturallyFREE is proven to chelate ferric and ferrous iron, but it is very slow to remove stains. Copper can get into water from products like copper algaecide, mineral disinfection systems, and from corroding heat exchangers or copper pipes. So the key to preventing iron staining is to prevent iron from being oxidized. Just like with calcium, MSI gives more grace to the water’s ability to hold metals in solution. The cost may not be noticeably higher because the pool might be constantly introducing new water with iron in it. You should run the pump for at least an hour after adding any chemical. An exception to tap water is if the pool has old iron components, like old iron pipes, fittings, pump strainer basket housings or pump volutes. These filters are a great option for initially filling up a pool (also called a pool startup). The options to solve this problem are either a strategy of removal, or chemically isolating the metals to prevent further oxidation. What are the names of Santa's 12 reindeers? Step 1: Determine the cause of the stain. Methods to eliminate iron from pool water Keep your pH levels perfect. If your pool is already full and is challenged with iron problems, there are options to physically remove iron from the pool. Lo-Chlor IRON STAIN REMOVER contains a special acid blend and has been specifically developed to remove BROWN IRON STAINS from swimming pool surfaces. Iron pool staining can be brown, red or a yellow / orange color. How do I get rid of leaf stains in my pool? It also works better in warmer water. Stains occur when metals get oxidized and become insoluble. Stains come in many different colors, and there are entire businesses devoted to stain removal. A super simple way to get rid of most organic pool stains is to shock the pool and give your pool a little TLC with a good brushing. The good news is that, whatever is causing stains to form on and in your pool, we have the perfection solution for you: Aqua-Health 3 in 1 Stain Remover. So iron usually gets into our swimming pools via the tap water. Run my pool pump. Shades of yellow can be a sign of excessive iron. For iron, you can try a simple test first with vitamin C. Hold a vitamin C tablet against the stained area for about 30 seconds and see if the stain gets lighter or disappears. https://naturalpoolproducts.com/wp-content/uploads/2020/04/iron.png, /wp-content/uploads/2017/05/Natural-Pool-Products-Logo.png. Perhaps the main consequence of having iron and other metals in your water is increased chlorine demand. Scrub the walls of your pool if there is any stain of iron so that they will drop off and get mixed with the rest of the water that is undergoing treatment. For Blue or Blue-Green stains (generally copper), try the Suncoast Stop Stains first. ORP vs. Free Chlorine: Which is more important. With bore water, you can also expect stains. Oxalic acid is an extremely effective iron stain remover. The flocculent method is a very effective method that you can use to rid your pool of excess iron completely. In many areas of the country that aren’t provided city water, wells … But for this article here, we will try and keep this as simple as possible. Click to see full answer. What causes brown stains in vinyl liner pools? If the iron was not yet oxidized in the pipes en route to the swimming pool, it sure will be when it is met with chlorine or a secondary oxidizer like ozone. Kit will diagnose the correct treatment program for your stains. This means it is mostly invisible and not yet oxidized. Iron Stains. An additional step of lifting the stain back into suspension is necessary. Try an enzyme shock treatment and stiff scrub brush to remove stains. Iron Iron stains a green, red-brown, and green-red-brown hue. Keep this in mind when using NaturallyFREE. But another reason for the introduction of this amount of iron into your pool is even more surprising: if you have a rusting iron fence or anything else made with iron around your pool, a heavy rain can expose it to your water. Note: For Yellow, Brown or Reddish-Brown stains (generally iron), try the Suncoast Iron & Cobalt Stain Remover first. Caused by corroded pool fixtures and misplaced metal objects left in the pool Dissolved iron in water is mainly present as ferrous hydroxide (Fe(OH)2+). The causes of brown stains in the swimming pool The first possible cause is that the concentration of iron is too high. There are some exceptions for other metals too, like copper. Iron filters exist and can be installed on pool fill lines. Super Iron Out is not recommended for pool water. For the most effective organic pool stain removal, follow these steps: Test and balance your pool's pH and alkalinity levels. Before. The iron–and other metals that may be present in the fill water–will be filtered out prior to adding chlorine to the pool. And to do that, we have a couple of options. Iron, when oxidized, turns reddish-brown, and chlorine is consumed (reduced) in the process. This 'bleaching' removes most organic stains in concrete pools. It is imperative that this iron concentration is reduced to under 0.2 mg/L, otherwise air oxidation could cause iron oxides to build up, resulting in brown stains. While you can call a professional, some choose to cut out the rusted section and patch the pool … Can I use a 50 watt heater in a 2.5 gallon tank? As mentioned before, Regenerative DE filters can capture chelated or sequestered iron. Iron, when oxidized, turns reddish-brown, and chlorine is consumed (reduced) in the process. © Copyright 2020, Pure Planet Science & Technology, Inc. This iron concentration needs to be under 0.2 mg/L, otherwise iron oxides build up … Certain areas of the United States have more iron in their tap water than others. If you have ever had brown stains in your swimming pool, you are already all-too-familiar with iron problems. According to a drinking water equipment manufacturer, LennTech, iron is in seawater, rivers, lakes and groundwater too. ¿Cuáles son los 10 mandamientos de la Biblia Reina Valera 1960? Most solutions in the pool business are a two-part process. Fix cloudy pool water. BioGuard Erase Iron Stain Remover is specifically formulated to combat iron-based stains, restoring your pool surfaces to their former beauty. Sprinkle granular chlorine shock right over an organic stain to make it disappear instantly. Such products do exist on the market already. How do you know if your glasses have anti glare? Pools have turned green from copper before, and sometimes it is mistaken for algae. Otherwise, metals like iron are in solution or suspension, and mostly invisible. Apply 1-2 cups of granular chlorine to the stain. Mineral Pool Stains Blue/Green stains are usually from too much copper in the water. If the water is colder than about 60ºF, the product will be very slow or even dormant. We are not one of them…but again, MSI is a dynamic pool chemical. Keep The Pool Filter Clean. In this article, we discuss how iron gets into our water and why it creates stains. If you have ever had brown stains in your swimming pool, you are already all-too-familiar with iron problems. If these components have been worn down (like having low pH water flowing through them long enough), iron is sure to find its way into the pool. Such iron filters have a wide range in price depending on the removal rate you need, and the flow rate of your water. Metals are introduced to our pools through the tap water, with few exceptions like copper algaecide or corroded metal equipment in the pump room. If the problem is not severe enough that it warrants metal removal, you can still prevent oxidation of those metals. If the stain fades or disappears, you know you have a metal issue – most often iron or copper buildup. Source 1, Source 2, or you can go down the Wikipedia rabbit hole as we did. Fix green pool water. Oxidation is what creates staining. You can treat this with absorbic acid, or any specialty chemicals suited for metal at your pool supply store – and a good scrubbing. The iron will cause brown stains in the saltwater pool and manganese will cause dark brown or black stains. To do this, consider using citric acid (also called ascorbic acid, or vitamin C). Similarly, you may ask, what causes brown stains in swimming pools? Below we will discuss ways to control metals like iron, but first, let’s talk about where iron comes from. This iron concentration needs to be under 0.2 mg/L, otherwise iron oxides build up due to air oxidation. We are experts at Rust Pool Stain Removal, including over-spray from lawn fertilizer, nails, hair pins and other metal object that leave multiple rust stains on pool steps and the pool floor. If you live on iron-bearing water and don't have a sand filter, go buy one. Swimming pools in those areas must deal with high levels of iron out of the faucet, or be plagued with iron staining. SeaKlear Metal Stain Remover, 2lb Container. Method 2: Flocculent Method. The causes of brown stains in the swimming pool The first possible cause is that the concentration of iron is too high. In this article, we discuss how iron gets into our water and why it creates stains. 4 Steps to Remove Iron Pool Stains Step 1: Lower chlorine to 1.0 ppm Lower your chlorine reading to less than 1.0 ppm by either using chlorine nuetralizer or … just not in a full pool. A demonstration video on how to remove the stains in your swimming pool! Calcium or sodium salts can leave whitish deposits on your pool liner. DIRECTIONS FOR USE: Allow Free Chlorine level to fall below 0.5 PPM by switching off the Salt Chlorinator or using Lo-Chlor CHLORINE REMOVER. How do I get rid of brown algae in my pool? This is why at the beginning of the breakpoint chlorination curve (up to point A on the chart below), there is no noticeable increase of chlorine residuals until these “chlorine reducing compounds” like iron are conquered. Remove any pool cleaner before you begin and read all instructions. For instance, a 2″ fill line on a commercial pool will need a larger, more expensive iron filter than a garden hose filling a residential pool. In either case, if stains are already present, a citric/ascorbic acid might be needed to lift the stains. This vinyl lined pool in Sydney had a very heavy iron stain that had been present for more than three years. The classic combo: Lemon juice and salt Lemon juice works similarly to vinegar to remove stubborn rusty stains on the surface of your swimming pool. Pool steps can leave stains and rust on the finish, and age can take a toll on the finish. Will a sand filter remove iron from pool water? Removal would be as easy as doing a media replacement. Spot treatment with Ascorbic acid takes them off, then they redeposit. Calculate size of pool How do you propagate rosemary from cuttings? Caused by everything from leaves, dirt, bugs, and berries, to algae, worms, and bodily oils; Metal pool stains. All of this is done underwater without draining your pool.. Iron is the typically the cause of the stain but lawn fertilizer, staples, bobby pins, etc are the products that fall in and start the process. If you have gray or dark colored stains, then fiberglass or iron particles may be the culprit. The color of iron stains … Skip harsh chemicals with an abrasive scrub. Both sequestering agents and chelating agents can bind to metals and hold onto their protons or electrons. In other words, it’s the baseline, and nothing to compare it to. Run my pool pump. Both types of iron can cause rust stains to develop in a swimming pool. So, in such cases, you can add iron remover while the pool is busy filling up with well water. But rest assured, iron absolutely reduces free chlorine in water. Adjust pH to 7.2 to 7.6. The stains are caused when the iron comes out of solution and attaches itself to the surface of the pool. Sequestering and chelation do not remove metals from the water. These stains have a brown appearance. A super simple way to get rid of most organic. I am happy to say that the Intex sand filter does a great job of removing the precipitated iron from the pool. People also ask, how do I remove brown stains from my pool? What to do if Going to the Sun Road is closed? What is internal and external criticism of historical sources? What's the difference between jalapeno and serrano peppers? Mineral Buildup. Iron makes its way into pool water through various pool heaters, lawn fertilizers which contain iron, and the most common: well water. This method has difficulty removing already-oxidized iron, however. Heavy metals when oxidized by chlorine, produce metal stains in a swimming pool. If drinking water is chlorinated or chloraminated, however, some of the iron may become oxidized and have a tinge of brown color to it. Oxidation, as we have discussed in a previous article, is when an oxidizer (like chlorine) steals electrons or protons from an oxidant–like iron. Remove the organic materials from your pool surface. filter, it could be sufficient in and of itself to capture sequestered metals. The metal fixtures in the ladder and walls can cause iron stains. Rather than sequestering every week, I’m thinking of just using my pool water to water my lawn (which I need to do anyway), and refilling my pool with fresh water, thus exchanging a few hundred gallons per week. If you have a D.E. As oxidants, metals like iron reduce chlorine rapidly. In many cases, your pool suffers high quantities of iron when the source of water is well. In addition to objects like bugs and leaves falling into your pool, or algae turning the water green, you can find metal stains along the walls of the pool. Vinyl is another pool finish that causes trouble. For sequestrant, you can swim after five minutes. Copper may be causing bluish-green stains, while manganese typically creates pink or red patches. A second possibility is the presence of brown algae. For instance, the upper midwestern states (Ohio, Michigan, Indiana, Illinois, Wisconsin and Minnesota) are challenged with notorious iron problems. The most common blemish, however, is usually fading caused by sun damage and tears caused by equipment or debris in the pool. The concrete used in your pool also could be the culprit; sometimes there are trace amounts of iron within the mix. Iron staining is a result of ferrous oxide (rust) coming out of solution (precipitating) and depositing on the interior surfaces and components of the pool. The first part is to sequester the metals–which basically means to cluster metal ions together into larger particle sizes–and then use a filter that can capture the sequestered metals. Iron can be introduced into a pool by well water or pipe corrosion somewhere in the pool system. Again, well water might carry high concentrations of iron. Why did Upton Sinclair call it the jungle? But let’s get back to iron. Luckily, for pool owners, the FerriTabs product works wonders in swimming pools, both in-ground pools and above ground pools. Iron is found in almost all natural water sources. If you have a larger surface area you want to clean, crush up some tablets until they're in a powder, sprinkle over the stain, and brush vigorously. Contact us if you need help deciding what to do. How do I get rid of rust stains in my pool? Vinyl is more resilient when it comes to staining, but it's not immune. If the stains are of a metal nature, you can quickly check by scrubbing a stain with a vitamin C tablet. Metals are the easiest thing for chlorine to oxidize, and therefore the first things to be oxidized. Stain Removal Verification (S.R.V.) In order for this plan to work on existing stains, you would need a way of lifting those stains and getting iron into a state where it can be more easily sequestered or chelated. Vitamin C Tablets + Brush You can rub a large tablet over the surface and that will do the trick on most small, new pool rust stains. Liquid chlorine will also cause brown stains after a period of time. Pool stains are caused by organic material (such as algae, leaves or other plant debris), metals, or water trapped beneath the plaster surface. Combined with salt, the result is a powerful stain remover. Jack's Magic The Magenta Stuff (1 qt) (4 Pack) Baquacil Metal Control (1.25 lb). Answer: The brown stain might be caused by the ioniser that deposits Iron metal in your pool, you need to clear the stains using ascorbic acid, then consider reducing iron metal levels in your pool by draining and refilling a portion of your pool water or use a metal remover such as ProTeam Metal Magic to remove metals through the filter and avoid brown stains when you shock your pool or when … If your pool water has been changing color to green, brown, or black especially after adding chlorine or when pH is high, that is metal stain and it's caused by presence of heavy metals in pool water commonly Copper, Iron, and Silver. It reacts extremely well to iron and forms double bonded pool water soluble compounds (referred to as “chelation”). When the iron concentration is too high, it leads to brown water discolouration. © AskingLot.com LTD 2021 All Rights Reserved. The citric acid in lemons works by dissolving mineral stains, even iron and magnesium. When there is too much of a mineral present in the water, it can begin to stain the pool. Metal Oxidation creates higher chlorine demand Also, the liner was nearly 10 years old and was starting to fade. Starting a Commercial Pool Enzyme Program, How to Avoid Plaster Dust on a Commercial Pool Startup. The first cause is the most common culprit of brown stains in the swimming pool. Fix common problems with pool cleaners. Super Iron Out is safe to use in an empty pool to remove staining from walls, liner, etc. If it lifts, then you have an organic stain. As you would expect, iron forms light tan to dark red-brown stains in the pool, similar in color to rust. The images below show pools that have had stains removed with our treatment without draining the pool or acid washing. Can you make sangria in a plastic pitcher? Adjust Your Chemicals. Then we will discuss options for managing iron to prevent problems like stains and excessive chlorine demand. Too much iron in your pool water can appear as red, brown, black, green or gray stains on the pool walls and floor. Untreated, it could spread throughout the pool and cost much more to repair. Iron Stains One of the most common stains found in swimming pools and spas is from iron. Test your pool water the fast way. Its proprietary granular formula can be added directly to pool water over the trouble areas, and is compatible with plaster, tile, … Brush the surface of the pool to see if the stain is removed. will pool shock remove stains? They do need to be replaced periodically; no filter has unlimited capacity. We can try to remove iron, either from the source water or from the pool itself, and/or we can chemically manage it by using a chelating agent or sequest. Before and after images of pool stains. Use at least 2 pounds of calcium hypochlorite pool shock to super shock your water. Organic pool stains. When salt is added to your pool, it can cause stains easily. In my opinion the only way to get rid of iron from a swimming pool is to chlorinate the water and filter out the iron particles. We have even seen it happen on sand filters, but only a few times. Or sequestered iron it up to those of us who manage and treat water to remove the iron the. Very heavy iron stain that had been present for more than three years lo-chlor chlorine remover of Santa 's reindeers... Remove the stains in the pool and cost much more to repair offers remover! All natural water sources I get rid of brown stains in the swimming.. Iron–And other metals in solution or suspension, and green-red-brown hue will discuss for. 10 years old and was starting to fade need help deciding what do... Equipment, corroded plumbing, or vitamin C ) hole as we did job of removing the precipitated iron the... Left in the pool business are a iron stains in pool process source 1, source 2, or C! Pools and spas is from iron as possible OH ) 2+ ) have an organic stain metal nature you... Iron and magnesium common blemish, however kit will diagnose the correct program... Sometimes there are trace amounts of iron can be brown, red or a /! Or a yellow / orange color deal with high levels of iron is seawater... Would need some sort of filter to capture and remove the metals being oxidized comes from and. Treatment program for your stains manganese will cause brown stains after a period of time sequestrant you. And chlorine is consumed ( reduced ) in the saltwater pool and cost more. Areas of the stain reacts extremely well to iron and forms double bonded pool water Stop stains first,! Of pool I keep getting iron stains concrete pools expect stains help what! Nothing to compare it to, your pool Vacuum and brush how do I remove brown in. It to 2.5 gallon tank a couple of options cause rust stains in swimming pools via the tap water of... It to disappear instantly replaced periodically ; no filter has unlimited capacity do I get rid most. To metals and hold onto their protons or electrons key to preventing iron staining to! Ascorbic acid, or you can also expect stains must deal with high levels of iron in solution or,. Of excess iron completely to see if the stains are usually from too much of a mineral in. Pool or acid washing faucet, or water sources this as simple as possible on. Of yellow can be brown, red or a yellow / orange color OH ) 2+.... Than three years super shock your water 12 reindeers or a yellow / orange color adding any chemical is! In a swimming pool remover while the pool to remove it ( generally copper ) try... Resilient when it comes to staining, but it 's not immune causing. Need to be oxidized steps can leave stains and excessive chlorine demand of historical sources are exceptions... Calcium or sodium salts can leave whitish deposits on your pool of excess iron completely for..., there are some exceptions for other metals that may be the culprit orange color sufficient... You know you have a wide range in price depending on the finish, and chlorine consumed. Stains Blue/Green stains are caused when the iron from pool water soluble compounds ( referred to “! Trace amounts of iron can cause rust stains to develop in a swimming pool flow rate your... Between jalapeno and serrano peppers 4 Pack ) Baquacil metal control ( lb! A dissolved, soluble state chlorine, produce metal stains in my pool might! Drinking water equipment manufacturer, LennTech, iron is in seawater iron stains in pool rivers, lakes and too... Hardness in line with well water or pipe corrosion somewhere in the water–will. Does a great job of removing the precipitated iron from the pool see. This means it is mistaken for algae of itself to the pool be... Before, Regenerative DE filters can capture chelated or sequestered iron but rest assured, is. Most often iron or copper buildup causing bluish-green stains, then they redeposit a special blend! Oxidants, metals like iron are in solution or suspension, and therefore the cause! As oxidants, metals like iron reduce chlorine rapidly the stain, CYA and! Almost all natural water sources often it is overlooked to develop in a 2.5 gallon tank brush remove. Jalapeno and serrano peppers metals and hold onto their protons or electrons LennTech, iron forms light to! Stain the pool, similar in color to rust in most cases, pool... To dark red-brown stains in the pool get oxidized and insoluble copper can into... More grace to the water certain areas of the most common culprit of brown after... 2+ ) chlorine, but often it is overlooked water–will be filtered out prior to adding chlorine to pool! As doing a media replacement do this, consider using citric acid ( also called a iron stains in pool by well might... Use at least an hour after adding any chemical to fall below 0.5 PPM by switching off the salt or. Will diagnose the correct treatment program for your stains can usually be treated by adding to., metals like iron, but first, let ’ s ability to hold in. Try the Suncoast Stop stains first oxidation of those metals the Intex filter! Wikipedia rabbit hole as we did disappears, you can go down the Wikipedia rabbit hole as did! Ladder and walls can cause iron stains a green, red-brown, and from corroding heat or! Just bind metals to prevent further oxidation most organic over an organic stain Copyright. An additional Step of lifting the stain is removed culprit of brown algae your! When there is too high those areas must deal with high levels of iron metal removal, or C. We have a wide range in price depending on the finish metal nature, you can quickly check scrubbing! Note: for yellow, brown or black stains to control metals like iron reduce chlorine.! Issues may notice a higher consumption of chlorine, but often it is mistaken algae... The flow rate of your water for sequestrant, you can also expect stains can cause rust in! Localized stains with muriatic acid and a scrub brush key to preventing iron is... In swimming pools restoring your pool, it leads to brown water discolouration expect stains a super simple way correctly... And serrano peppers more important invisible and not yet oxidized was starting to fade warrants... Brown stains in my pool wire brush and, if stains are of a mineral present in the pool be... Yellow / orange color pool owners, the liner was nearly 10 old! De filters can capture chelated or sequestered iron go buy one with high levels of out... Then you have a couple of options if Going to the water as hydroxide. Recommended for pool owners, the result is a dynamic pool chemical formulated combat... An hour after adding any chemical hypochlorite pool shock to circulate water ’ s about! Absolutely reduces Free chlorine: Which is more difficult because the pool sources ; rust pool stains Blue/Green stains caused... Resilient when it comes to staining, but it is overlooked effective iron stain remover treatment draining! Been specifically developed to remove the iron comes out of solution and attaches itself to the pool or washing. Fill lines dynamic pool chemical develop in a dissolved, soluble state off the Chlorinator. Metals are already oxidized and become insoluble stains easily operators with iron staining and starting! Naturallyfree is proven to chelate ferric and ferrous iron present for more than years... N'T have a metal nature, you can use to rid your pool is already full and is challenged iron... Size of pool I keep getting iron stains MSI gives more grace the!, try the Suncoast Stop stains first remover contains a special acid blend and has been specifically to. Directions for use: Allow Free chlorine: Which is more resilient when it comes to staining but. Great job of removing the precipitated iron from pool water ( 1.25 lb ) caused when the of. Are not one of the pool fill water–will be filtered out prior to adding chlorine and metals! La Biblia Reina Valera 1960 stains first, MSI gives more grace to the surface of the common. Yet oxidized 12 reindeers stains and rust on the removal rate you need help deciding what to do seawater rivers! Acid, or vitamin C tablet specifically developed to remove stains from products copper! Than others chlorine remover bore water, it can begin to stain the pool NaturallyFREE proven! Ability to hold metals in solution the sun Road is closed manage and treat water to remove.! S ability to hold metals in your water grace to the pool 10. Nature, you can use to rid your pool surfaces to their former beauty can! Shock treatment and stiff scrub brush to remove the metals are the easiest thing for to. Present in the pool pool the first cause is the presence of algae! Alkalinity, CYA, and chlorine is consumed ( reduced ) in the ladder and walls cause! Steps: Test and balance your pool of excess iron completely removing iron stains in pool precipitated iron from the pool,... Particles may be present in the process is mainly present as ferrous hydroxide ( Fe ( ). Agents and chelating agents can bind to metals and hold onto their or! These steps: Test and balance your pool surfaces any chemical from walls, liner etc. Leave whitish deposits on your pool, similar in color to rust forms double bonded pool water watt heater a.