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Thread: White flakes in pool

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    White flakes in pool

    My in-laws pool is finally almost completely clear and everything is balanced except for their CYA (it's only at 50). They have a new problem though. They said that there are white flakes in the bottom of the pool. They have a vinyl liner. Any idea as to what the white flakes are and how to get rid of them?
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    BoDarville's Avatar
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    Re: White flakes in pool

    Do you have a SWG? I'm thinking yes since your post is in the SWG forum. If so, it is most likely calcium flakes coming out of a SWG. They mean that your water balance is off just a little. Can you post a complete set of test results so we can give you more specific advice?

    Also, If in fact you do have a SWG, I would suggest adding that to your signature to make it easier for readers to see that you have a SWG.
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    Re: White flakes in pool

    I'm posting for my in-laws. I don't have their exact numbers, but when they called me with them, I came here and made sure they were within range and everything was within normal range except the CYA and alkalinity. They added muriatic acid to lower the alkalinity and I had them add some stabilizer.

    Yes, they DO have a SWG.
    27' ABG
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    Re: White flakes in pool

    From pool school ,I would suggest no more muriatic acid (For lowering PH use either muriatic acid (preferred) or dry acid. To raise PH use soda ash) I hope you meant alkalinity.
    12,000 gal. 14x28 Inground vinyl liner (2004), 1 HP. Jacuzzi magnum pump,
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    Re: White flakes in pool

    To make it clear I hope you are trying to lower PH. Best of luck with it
    12,000 gal. 14x28 Inground vinyl liner (2004), 1 HP. Jacuzzi magnum pump,
    Raypak heater, Jacuzzi laser sand filter,Autopilot DIG-220 SWG, 35/22 cell,
    TF-100 test kit,K-1766 saltwater test kit, speedstir

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    Re: White flakes in pool

    Also please check to make sure the chlorination system is set up to run ONLY with the the pump on.

    Some SWC do not have flow sensors, like Compupool, so they can run while the pump if off if not installed via a timer or in synch with the pump.

    Saw this a couple of years ago at a pool and the end result was white flakes and very bad plaster as a result.
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    Re: White flakes in pool

    Ive had this problem when the water balance is perfect. The swcg was not the modern self cleaning type and id been a little lazy in cleaning the plates of calcium. Once i cleaned the plates there were no more flakes.

    very apt that smiley, i should have cleaned the plates sooner.

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