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Thread: CYA Replace water? Or, just Add?

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    CYA Replace water? Or, just Add?

    The most excellent Pool Calculator says I need to replace 12% of my water to reduce my CYA from 57 to 50.

    Is it sufficient to simply ADD water, or do I actually need to empty and replace?

    Also, how much difficulty is CYA of 57 going to cause my vinyl AGP?
    Doughboy 13K Oval Gallon AGP. 1HP pump. Zeobrite filter.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: CYA Replace water? Or, just Add?

    CYA at 57 is fine. It will go down slowly over time.
    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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