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Thread: Adding CYA

  1. Back To Top    #1

    Join Date
    Jul 2008
    Seacoast, NH

    Adding CYA

    I made a mistake and I'm hoping someone can tell me if it is a problem or not.

    I bought a 4 lb of CYA and put it in the pool without having read the instructions carefully enough. I was sprinkling it in the deep end and hubby was brushing. It didn't seem to be dissolving very quickly, so I reread the instructions and saw it is supposed to be put in the skimmer! <sigh> We had put about half the bottle in. I put the rest in the skimmer.

    So hubby and I stirred for about an hour. We got the intakes in the bottom to pick up some of it. It was getting very cold and very dark, so we came inside.

    How big of a problem is it that there is CYA sitting on the bottom of our pool?

    19,000 gallons
    Stay-Rite System 3 Cartridge filter
    IG vinyl, MasterTemp 400 Propane heater
    Intellichlor 40 SWG, 2006 Taylor Test Kit with Speed Stirrer
    1.5 HP Pump

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

    Re: Adding CYA

    CYA is acidic and can damage the pool surface if it sits in one place for too long. Ideally you want to sweep it into the main drain or vacuum it up.
    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

  3. Back To Top    #3
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: Adding CYA

    Leave your pump running for 24-48 hours while the CYA dissolves in the filter.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner

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