How Do I Get Rid Of Brown Stains In My Pool?

Having a dirty pool is bad enough, let alone a stained one. Truth to be told that you can always be vigilant about all the maintenance, but you still end up with stains all over your pool. What’s great about it is that all you need is a pool stain remover, and you can take some precautionary measures to make sure it won’t happen again in the future.

How do I get rid of brown stains in my pool? If you want to get rid of certain stains like a brown stain off your pool, you can try to use an enzyme shock treatment. Then proceed with some scrubbing to remove the stains. It will automatically remove all greenish-brown colored stains.

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Learn about the cause of pool stains and get rid of them entirely by reading this article. Dive in.

What Causes Pool Stains?

Before applying the correct pool stain remover, you need to know first what stained your pool. There are two categories when it comes to pool stains, organic and metal. Organic stains are the type of stain from leaves, berries, and other organic debris that leave stains if they settle and left alone in your pool’s surfaces.

Metal stains are plenty of metals that can accidentally be introduced into your pool. It can be in your water source or have corroded the copper pipes in your water filtration system. Rusted metal accessories, parts, and equipment can also introduce stains in your pool.

Once you’re able to figure out what stains your pool, you can decide which pool stain you want to use for your pool, and this can be done by looking at their color:

Greenish-Brown Stains

These colors of stains are most likely from organic stains that come from leaves and other plants nearby.

Greenish-Brownish-Red Stains

This color is a good indication that it has something to do with the iron in the water. If you fill your pool using well water, it is most likely that there is iron in that water. Or you have iron somewhere in the surroundings of the pool like a fence. If the fence rusts and the rust make its way into your pool, you can end up with this color.

Brownish-Blackish-Purple Stains

This dark combination color is characterized by manganese, a natural element present in well water. But it can also be found in some municipal water supplies. They are water treated to reduce manganese but not entirely removed.

Getting Rid Of The Pool Stains

Once you know the cause of the pool stains and figure out the color of it, you need to test your theory and confirm the source of the issue. You can perform a test by applying a small amount of chlorine directly to the stain for organic stain. If it is truly organic, the stain should be removed easily without any reaction.

For metal stain, testing it out with chlorine will give you zero results. It is why some of the accessories of the pool itself are made out of metals. If you suspect a metal stain, you can apply some ascorbic acid powder to the stain. If the stain goes away or is lightened by the powder, it will prove that the caused was by a metal.

Getting Rid Of Organic Pool Stains

Once you’re done determining the stain’s cause, you can proceed getting rid of the stains. If you found out it is an organic pool stain, your chlorine will be the answer. But because the amount of usual chlorine doesn’t do the trick, you might need to chlorinate the water super. You need to use pool shock to achieve that.

  1. The first thing is to test and balance your water by using the strips from the test kits. Ensure that the alkalinity is between 100 ppm to 150 ppm. 125 is the ideal alkalinity level, and the pH level should be 7.4 to 7.6, 7.5 is the ideal level.

  2. The the second step is to shock the pool. If you are dealing with a single stain, a regular dose of shock will be able to get rid of them. But if you have larger and multiple stains, using a triple dose will be enough. It means adding three extra pounds of calcium hypochlorite shock for every 10,000 gallons of water.

  3. Brushing the pool will be your next course of action to remove the remnants of the stain.

  4. Then you can proceed running the pump. It will allow the shock to circulate all over the pool, and you should do this for 8 hours or just leave it overnight.

  5. After the circulation, you can brush it again to remove the stains altogether. Check the stains if they are gone. If they are still visible, repeat the process all over again.

Getting Rid Of Metal Pool Stains

Organic stains might be an easy task, but metal stains can be a little tricky and difficult, but it is not impossible.

  1. The first thing to do is to test the water if there is metal present in it. It is a good prerequisite to find out first the metal that stained the pool. Once you figure it all out, finding the type of pool stain remover you should get will be easier. There are plenty of test kits available that will test for meta.

  2. Find a metal pool stain remover. Look for the one that accommodates your needs and your pool needs.

  3. Follow the instructions as each pool stain remover work differently to one another. Follow the instructions of the manufacturer to get the best results as possible.


Overall, finding a stain in your pool doesn’t mean you are not taking care of your pool. You might not be able to figure it out at first because it can be for multiple reasons. But once you can identify the cause and the source of the stain, it will be easier to fix it. Then it will only be a matter of preventing it from happening again.

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