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Thread: Keep shocking if CC is 0, chem is ok, but water is cloudy?

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    Keep shocking if CC is 0, chem is ok, but water is cloudy?

    Opened pool on Friday. Got all levels where they need to be, and am keeping FC at shock level. Water is still cloudy, but getting better every day.

    Do I need to keep at shock level until the sand filter clears everything up? Or am I to lower FC to normal levels now the CC is at 0?

    I think it's the former, but just checking.

    (I still need to vacuum some sludge off bottom and sides.)

    My details:
    25k inground, vinyl pool.
    CYA 50
    Ph 7.4
    TA 110-ish
    CH 220
    Used CalHypo to shock until CH was above 200, now using 12.5% liquid chlorine.
    Sand filter

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    crookm11's Avatar
    Join Date
    Jun 2010
    Location
    Copperas Cove, Texas
    Posts
    422

    Re: Keep shocking if CC is 0, chem is ok, but water is cloud

    Keep the pool at shock level until you pass the overnight chlorine test. Then you will be good.

    Perform the overnight chlorine loss test.

    Mark Crook
    13,500 Gallon 24' x 52" Intex Ultra Frame
    Intex Sand Filter and Pump, Intex SWG (All hard PVC plumbed)
    TFTestKit-100---Pool School---The Pool Calculator
    Location: Copperas Cove, Texas --- My Pool Build---Useful Links for Intex Pool Owners

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    Join Date
    May 2011
    Location
    lebanon tn
    Posts
    370

    Re: Keep shocking if CC is 0, chem is ok, but water is cloud

    3 criteria to stop shock
    1- hold FC overnight (<1 ppm drop)
    2- <.5 CC
    3- water is clear


    You should hold shock until water is clear- with CYA in the pool, it shouldn't be hard to maintain
    You can add alittle DE to the sand filter to help clear the pool...
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

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