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Thread: CC keeps coming back

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    jefeyessica's Avatar
    Join Date
    May 2009
    Location
    Dallas, TX
    Posts
    62

    CC keeps coming back

    About a week ago, I had about 0.5 of CC. I shocked the pool to 11 ppm, tested the next morning, and the CC was gone. However, about 4 days later the CC is back up to 0.5 (even though the FC never went below 2.5) I was wondering if this is normal, and what to do to prevent it. I would hate to have to shock the pool every week (or more!)

    Thanks
    14,200 gallon in ground Plaster Pool
    "Titan Vertical Grid Filter" -- Pressure DE, 60 sq ft filter area

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    Join Date
    Jan 2009
    Location
    Cupertino, CA
    Posts
    1,966

    Re: CC keeps coming back

    CC of 0.5 is nothing to worry about. If it gets to 1.0 then you probably want to do something about it.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: CC keeps coming back

    Very small amounts of CC are constantly being created and destroyed. Occasionally it gets to a high enough level that you can detect it on the test. As long as it stays at 0.5 or lower, there is nothing to worry about.
    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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