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Thread: new results - ph high and cya low

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    Join Date
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    new results - ph high and cya low

    FC = 4.5
    ph = 8
    TA = 90
    CYA = 40

    Can I correct PH and CYA at the same time? I have the MA to add but it is really hot this weekend and would like to swim if possible. Should i just correct PH at the end of the day and then add CYA tomorrow to bring it up?
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    JasonLion's Avatar
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    Re: new results - ph high and cya low

    Yes, you can correct both today, just not literally at the same moment

    I suggest lowering PH to around 7.2 this time, which will help bring down the TA.

    You can swim half an hour, with the pump running, after adding acid. There is no wait to swim after adding CYA.
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    Re: new results - ph high and cya low

    Thanks Jason!
    16 x 32 inground with Tara Liner, 1 skimmer, 3 returns,
    1HP Hayward Super Pump
    Hayward Sand Filter
    Polaris 280 w booster pump
    Hayward SWG & Aqua Plus
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    RaviePoolGirl's Avatar
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    Re: new results - ph high and cya low

    The CYA in liquid form does not alter the pH, but the granular/powder form of CYA does lower pH as well. At the bottom of the pool calculator you can enter the amount of the CYA you would add to your pool and it will tell you how it will affect the pH.
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    Re: new results - ph high and cya low

    Quote Originally Posted by JasonLion
    Yes, you can correct both today, just not literally at the same moment

    I suggest lowering PH to around 7.2 this time, which will help bring down the TA.

    You can swim half an hour, with the pump running, after adding acid. There is no wait to swim after adding CYA.
    Jason,
    Is that 30 min wait time the same as after adding dry acid, (sodium bisulfate) or is that longer? Thanks!

    Todd

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