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Thread: CC keeps coming back

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    jefeyessica's Avatar
    Join Date
    May 2009
    Dallas, TX

    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!)

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

  2. Back To Top    #2

    Join Date
    Jan 2009
    Cupertino, CA

    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.
    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
    Silver Spring, MD

    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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