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Thread: Green pool, no CC

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    Green pool, no CC

    I've started working on my brother's pool. It sat with no chlorine or filter running for a few days and started turning green.
    I hit it with shock levels of chlorine and after about 30 minutes I tested for FC and CC and was surprised to find there was no CC. Does it take a while for the FC to bind to the organics to convert to CC?
    ~18000 gal in-ground pool
    Zodiac C170S SWG
    Hayward top mount sand filter
    Hayward Pool Vac Ultra

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    TizMe's Avatar
    Join Date
    Aug 2007
    Covington, Georgia

    Re: Green pool, no CC

    I think your CC should have showed up if you tested correctly ...
    Don't have a pool right now. Just sharing what I have learned over the years!
    Helpful Links:
    Pool School,Pool Calculator,Cl/CYA Shock Chart,TF Test Kit
    Doing BBB and loving it!

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Green pool, no CC

    CC's can be a little confusing......

    The presence of CC's (1ppm or greater) is indicative of the need to shock your pool.

    However, algae can still exist (other organics as well) and the CC's test can be .5ppm or less.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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