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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?
    -Xebec
    Doughboy 13K Oval Gallon AGP. 1HP pump. Zeobrite filter.

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