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Thread: CYA and Hydrogen Peroxide

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    CYA and Hydrogen Peroxide

    Is it true that addition of hydrogen peroxide to a pool will reduce the concentration of CYA?
    In ground Plaster pool 33,000 gal, DE filter, 2.5 HP pump, spa
    TF100 test kit
    Lucas, TX

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    JasonLion's Avatar
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    Re: CYA and Hydrogen Peroxide

    Not in practice. There is a specialized waste water treatment process that uses hydrogen peroxide to get cyanuric acid to precipitate out of solution, but their approach is impractical in swimming pools.

    A couple of companies have attempted to produce products to remove cyanuric acid from swimming pools, one of which was on the market for a time, but none of them have proven practical and reliable. None of them are sold any more.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: CYA and Hydrogen Peroxide

    A guy I work with has a friend in the water treatment business. He dropped off a pint of concentrated hydrogen peroxide, said it would fix the issue. Makes you wonder.
    In ground Plaster pool 33,000 gal, DE filter, 2.5 HP pump, spa
    TF100 test kit
    Lucas, TX

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    JasonLion's Avatar
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    Re: CYA and Hydrogen Peroxide

    The first thing the hydrogen peroxide will do is eliminate all of your chlorine. There is also a chance it will cause some cyanuric acid to crystalize into extremely small crystals that will cloud the water and pass right through the filter until they redissolve.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: CYA and Hydrogen Peroxide

    Thanks, appreciate the help.
    In ground Plaster pool 33,000 gal, DE filter, 2.5 HP pump, spa
    TF100 test kit
    Lucas, TX

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