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Thread: Balancing water

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    Balancing water

    I am trying to balance my water and unsure exactly what to do.
    I have a 20,000 gallon inground vinyl pool.

    My current numbers are
    FC 5
    TC 5.5
    PH 7.5
    TA 220
    CH 30
    CYA 20
    CSI .48

    I know that my TA is high, but am not sure if I should worry about it. Pool school says don't raise it to just get a number.
    Also wondering about my CH of 30. I know that should be higher, with a vinyl pool do I need to worry about it? I do know I need to raise my CYA with Stablizer and am working on that.
    SW Florida
    10,000 gal in ground concrete pool
    Pentair Cartridge filter
    Pentair Intelliflow pump
    Pentair SWG
    using BBB for pool chemistry/Lamotte ColorQ tester for daily testing

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Balancing water

    You can lower TA (and CSI) by lowering pH to about 7.2, aerate it somehow, and repeat it every time the pH gets back up around 7.8 until the TA is down. You already have CYA covered. Vinyl pools don't need Calcium to protect the concrete walls from etching. But if CSI is high, you could get scaling, even on vinyl, and you won't be able to use a wire brush to loosen it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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