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Thread: cya

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    How much cya by pounds of powder should I be adding for a 22500 gal pool. I used the calculator and checked with a couple other sources and there is a big difference. One source says 40 pounds. Another says 20. Please help.
    15,000 gallon, IG Diamond Brite plaster, Hayward Max Flo 1.5HP pump, Pentair Clean and Clear 100gpm cartridge filter.

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: cya

    Did you have a problem entering the data into the calculator? If the information is entered correctly, it is correct.

    It has been verified by 1,000's of users.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    Jun 2011
    Long Beach, CA

    Re: cya

    I'm getting 15lbs. of CYA to go from 0 to 80 ppm for 22,500 gallons. I suggest adding half the amount and test in one week, then add the right amount to get you to 80 ppm if you are running a SWG. Easier to add more, difficult to remove excess CYA.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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