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Thread: Super high CYA

  1. Back To Top    #1

    Join Date
    Jul 2011

    Super high CYA

    According to my k-2006 test kit, my CYA is around 180. I found this by filling halfway to the first line with pool water and the other half with tap water before adding the reagent then doubling the result.. Is this acceptable? Without the tap water, the dot disappears within a few drops.

    1. Pool is super clear
    2. Other readings are: ph 7.4, fc 5, ta 110....
    3. I'm fighting previous owner's liberal use of tricolor tabs
    4. I lose about 2 ppm chlorine a day (although it has been insanely hot in Indy, does that matter?)
    5. I have an auto cover that stays on a lot

    What should I do? Am I doing the test wrong?
    19000 gallon IG installed in 2003, owned by me since 2010, vinyl liner, 18x36, Sta-Rite PLM-150 cartridge filter, 1hp AOSmith motor on <brand unknown> pump, automatic cover, BBB since August 2011

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Super high CYA

    You did the test right.
    With a CYA of 200 you need to have your FC a lot higher. The best thing to do is to drain about half of the water and refill and retest.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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