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Thread: ok to exceed Normal FC range ?

  1. Back To Top    #1

    Join Date
    Mar 2009
    Charlotte, NC

    ok to exceed Normal FC range ?

    My recommended Normal FC range is 4-8. Is there any harm in Targeting FC 9 instead of 8, just happens to be less measuring etc. What is the harm so long as Iím below shock level?
    19,800 gallons (closed/winter 18,654 gal); plaster; 18x34 Ft kidney bean shape, Depth 3Ft-5Ft. Built 1992
    Pentair Whisper Flow Pump 1HP. Winter safety cover w anchors.
    Sand filter, Pentair Sand Dollar Top Mount Model SD80; Effective Filtration Area 3.5SF
    - FlowRate 75GPM, 8Hr 36,000, 10Hr 45,000, 12Hr 54,000; Pressure Weight 50PSI
    BBB (Hayward Chlorinator when leave town). Polaris 360 cleaner.

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

    Re: ok to exceed Normal FC range ?

    That is fine. The only negative is that you will use more chlorine in total.
    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

    Join Date
    Feb 2008
    Flower Mound, TX

    Re: ok to exceed Normal FC range ?

    There is more harm in lettinng a FC get too low than making it high.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

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