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Thread: pH was 7.2 but after 2 days of swimming it's 8.0

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    pH was 7.2 but after 2 days of swimming it's 8.0

    Should I drop some acid or will it go back down on its own? I now have a Taylor fasdpd yest kit

    Chlorine 7
    pH 8.0
    Alkalinity 120
    Hardness 0
    CYA 45
    Last edited by cnshough; 05-04-2014 at 03:57 PM. Reason: Add info

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    JasonLion's Avatar
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    Re: pH was 7.2 but after 2 days of swimming it's 8.0

    If you are adding chlorine with a SWG or bleach or liquid chlorine or cal hypo, you need to lower the PH with acid. If you are using trichlor tablets, they will lower the PH for you.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Richard320's Avatar
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    Re: pH was 7.2 but after 2 days of swimming it's 8.0

    What he said, but you're already getting up there with the CYA. Personally, I'd just use muriatic acid to adjust pH. It will fix the pH with half an hour of pump running,
    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.
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    Re: pH was 7.2 but after 2 days of swimming it's 8.0

    I use bleach for chlorine . My CYA was somewhere around 10-15, so I added 4 lbs of stabilizer which got it to 45. I'll add the acid. Thanks!

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