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Thread: Possible calcium scaling on pool vinyl liner - how do I remove this?

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    Possible calcium scaling on pool vinyl liner - how do I remove this?

    Hello, new to this forum.

    I recently opened our pool for the summer season and have noticed a very gritty substance on the pool walls. It is present where the floor meets the walls and extend 1.5-2 feet up. I have shocked the pool originally and that has cleared the water. I have had the water tested this past weekend for the second time and all reads normal.

    I was advised by my local pool store to reduce the pH significantly to bring the water into an acidic state to try and help remove whatever is on the walls. I have tried brushing the substance away but this does nothing. Can anyone tell me what my next steps should be? How did this occur and how fast can this be resolved. Is there a product I can use to remove it from the walls?

    Thanks!

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    Re: Possible calcium scaling on pool vinyl liner - how do I remove this?

    i had similar stuff this season. just keep brushing. a little more comes off each time with extended exposure to chlorine. at least mine did. good luck.
    30000 gal inground vinyl liner;sand filter w/glass media, nuvo uv, TF-100 test kit; 25 years on Baquacil, converted to TFP chlorine in 2016

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    Mod Squad pooldv's Avatar
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    Re: Possible calcium scaling on pool vinyl liner - how do I remove this?

    Welcome to TFP!

    Please fill out your signature with your pool info, the process is different for different types of pools. Here's how, Pool School - Read This Before You Post

    Also post some recent test results and tell us about your PH so that we can better diagnose the issue.

    More on scaling here,
    Pool School - Calcium Scaling Pool School - Calcium Scaling
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: Possible calcium scaling on pool vinyl liner - how do I remove this?

    Quote Originally Posted by ME3399 View Post
    Hello, new to this forum.

    I recently opened our pool for the summer season and have noticed a very gritty substance on the pool walls. It is present where the floor meets the walls and extend 1.5-2 feet up. I have shocked the pool originally and that has cleared the water. I have had the water tested this past weekend for the second time and all reads normal.

    I was advised by my local pool store to reduce the pH significantly to bring the water into an acidic state to try and help remove whatever is on the walls. I have tried brushing the substance away but this does nothing. Can anyone tell me what my next steps should be? How did this occur and how fast can this be resolved. Is there a product I can use to remove it from the walls?

    Thanks!
    If you will test diligently, you can run your pH 7.0 - 6.8 and that will speed the process. be on top of your testing and don't go any lower.

    It occurred through a combination of high pH and fairly high calcium content. Checking pH frequently prevents it from getting as high as it did.

    Sorry, no magic product....unless you want to go back to the pool store......they will be glad to sell you something. Whether it works or not is another issue.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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