Even if you regularly clean your pool and balance your water, you might still end up with pool stains. The key to getting rid of pool stains is knowing what caused them in the first place. Here’s everything you need to know about how to remove pool stains.
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⏰ Timestamps:
00:00 - Introduction to How To Remove And Prevent Pool Stains
00:33 - What Causes Pool Stains?
01:02 - How To Identify Pool Stains By Color
01:56 - How To Confirm The Source Of The Pool Stain
02:26 - How To Remove Organic Pool Stains
03:53 - How To Remove Metal Pool Stains
04:31 - How To Prevent Organic Pool Stains
05:10 - How To Prevent Metal Pool Stains
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Even if you regularly clean your pool and balance your water, you might still end up with pool stains. The key to removing and preventing pool stains is knowing what caused them in the first place check it out before we dive in, if you're looking for more help. Keeping your pool clean and clear check out our free pool care cheat sheet at swimuniversity.com cheat sheet. It's a totally free easy to use guide to help you keep track of taking care of your pool.

Okay. So what causes pool stains before you go out and buy a pool stain remover? You need to determine what stained your pool, the most common pool, stains fall into two categories. One is organic stains. These are leaves berries and other organic debris that can cause stains if they settle and are left there for some time on your pool, surfaces number two are metal, stains metals like copper and iron can enter your pool water through things like well water or a corroded.

Pipe the best way to figure out what type of stain you have is by the stains color greenish brown stains are likely organic stains caused by leaves or plant matter. Reddish blue stains are likely from brightly colored berries from a nearby tree or bush bluish greenish black stains could be caused by organic matter like leaves or berries. But if there's nothing like that around your pool, it's probably copper either from well water or a corroded pipe greenish, brownish red stains mean there's more iron in the water from either well water or a nearby source like a fence. If the iron rust and the rust flows into your pool, say after it rains it can stain brownish blackish purple stains are caused by manganese.

This is found in well water, but can also be found in some municipal water supplies. Okay, so you've got a good idea of what caused the stain it's time to test your theory and confirm the source. Now, if you think it's an organic stain apply a small amount of chlorine directly to the stain, and this should go away easily if it's organic, if you think it's a metal stain, chlorine has little effect instead apply some absorbing acid aka vitamin c directly to the Stain if the stain is removed or lightened by the powder, it's a metal stain now that you've identified the type of pool stain it's time to remove it. First, here's how to get rid of organic pool stains you'll need to super chlorinate the water to do that.

You'll use pool shock first, you want to test and balance the water use test strips or a liquid test kit to test and balance your alkalinity and ph. Your alkalinity should be between 100 and 150 parts per million, with 125 parts per million being ideal, and your ph should be between 7.4 and 7.6, with 7.5 being ideal. If you need help balancing your water chemistry be sure to check out our other videos, two, you want to shock the pool. If it's a small stain, a regular dose of shock should work, but if you have multiple or larger stains use a triple dose of shock.

This means adding three pounds of calcium hypochlorite shock for every 10. 000 gallons of water now remember to always shock your pool at dusk or night time, so the sun doesn't burn away the shock three after you've added shock brush your pool, use a stiff, pull brush to thoroughly scrub the stains, and it's okay. If you don't remove them completely at this point, four you wan na run the pump allow the shock to circulate through the pool for at least eight hours or overnight five you wan na brush the pool again during those eight hours, while the shock is circulating or The next day scrub the stains again and six check the stains if they're gone great, if not repeat the process of shocking your pool. Okay, now here's how to get rid of metal pool stains metal stains can be a little bit more difficult to get rid of, but it's not impossible.
First, you want to test the water from metals knowing what kind of metal stained your pool will help you buy. The right type of pool, stain, remover some home test kits will test for metals, but your best bet is to take your water sample to a local pool store. Next, you want to buy a metal pool, stain remover, look for one that targets the type of metal that stained your pool and then three follow the instructions. Each pool, stain remover will work a little differently.

It's usually helpful to have a pool brush on hand to distribute the stain remover. Now, how do you prevent pool stains from happening in the first place when it comes to preventing organic pool stains, it's all about keeping organic contaminants from settling in your pool? First, you want to keep your water balanced, especially the alkalinity, ph and sanitizer levels. Two keep the pool clean by using a robotic pool cleaner or regularly vacuuming your pool three skim. The pool surface often to keep leaves twigs and other organic debris from sinking to the bottom.

Four you want to move plants with fruit and berries away from the pool area and five check the pool regularly for stains and remove them, while they're still small. Finally, here's how to prevent metal pool stains. First, you want to test your water source for metals if they're present use a hose filter. Whenever you fill or refill your pool, two use a metal sequestrant in your pool.

This chemical binds with the metal particles to keep them from settling on pool surfaces, and it means that metal particles can be removed by the pool filter now, keep in mind a metal sequester is not a metal pool, stain remover, it can prevent stains, but it will Not remove them three maintain your pool plumbing. If your parts use copper pipes, check them regularly for corrosion and four keep your ph level steady. This is especially important if you have copper in your water. A low ph level will make the water acidic acidic water, corrodes and oxidizes copper, which will stay in your pool.

Now, if you have any more questions about pool maintenance, go check out our free pool care. Cheat sheet at swimuniversity.com cheat sheet and if you found this video helpful leave a comment hit the like button and subscribe for more pool maintenance tutorials throughout the season. That's it thanks again and happy swimming.

11 thoughts on “How to remove and prevent pool stains | swim university”
  1. Avataaar/Circle Created with python_avatars Santana pa ti says:

    hi every time i put my well water in the pool if i add sock it turn brown like stain , can you make a suggestion how can i fix this so i can get my chlorine level up and not mess up my pool pls, last time i fill up just left it with out chlorine to be able to keep my water clear

  2. Avataaar/Circle Created with python_avatars Angie Rogers says:

    My water green but clear and great on ph I think I may try this

  3. Avataaar/Circle Created with python_avatars Raize The Bar says:

    How can we get a hold of you if we still have questions?

  4. Avataaar/Circle Created with python_avatars DeanCtsV says:

    Very helpful. Thanks!

  5. Avataaar/Circle Created with python_avatars sammy steward says:

    we use a brand of stain remover called scorbex, and it usually gets most stains out quickly. it will mess with the ph a little though. Service area Barrhaven??

  6. Avataaar/Circle Created with python_avatars Magical Melody says:

    I have a nasty dark water line stain all the way around the top of my pool. I’ve never been able to get rid of it with anything, but the one thing I found that is working is mr. clean magic erasers. I got about half of it gone today . Went through 2 erasers doing so. I’ll go back out tomorrow to finish up.

  7. Avataaar/Circle Created with python_avatars Ultimate Tech Hub says:

    Great video!! I have a pool with Caribbean Blue quartz finish. A quick question is it normal to have small black specks in the finish? I didn't notice them right away but now it's sunny out I can see them clearly. I tried to scrape them off with my finger nail but they appear to be imbedded in the quartz. My PH and Alkalinity is perfect. My chlorine is a little high but just swam all day so I added a little extra. Any thoughts would be greatly appreciated. Thanks. I just subbed too.

  8. Avataaar/Circle Created with python_avatars Chito's World says:

    How long do you wait for small pools when you adjust ph ? I’m getting a 870 gallon one with 1000 pump 878 flow

  9. Avataaar/Circle Created with python_avatars Mike W says:

    Just moved in to a house with a pool. It had green stains on the walls from not being taken care of. Have shocked it multiple times and they just won’t go away. Any ideas? Waiting on a more aggressive brush from Amazon. It’s a gunite pool.

  10. Avataaar/Circle Created with python_avatars Swim University says:

    We hope this helps you identify and remove pool stains! Like we mentioned, if it's an organic stain, use chlorine shock. If it's a metal stain, you'll want to identify the type and buy the right metal remover. And if you have a surface stain above the water, you can use a bleach-based solution for an organic stain or a lemon juice solution (ascorbic acid) for a metal stain!

  11. Avataaar/Circle Created with python_avatars Matt says:

    How do I get rust stains off my concrete pool deck? Thanks.

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