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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. - Forum owner
    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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