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Thread: PH

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    Join Date
    Jul 2010
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    PH

    Using the BBB method. This is the best method I have found. Use allot of chlorine. Ph in check @ 110 alkalinity. Then PH goes high?? Off scale. It took 1 gallon of muriatic acid to bring ph down to 7.4. It dropped my alkalinity to 60. Had trouble at the end of summer controlling high ph. How do you keep ph down and alkalinity up? Using chlorine tabs to get my cya up.
    25K Vinyl In ground, 1 1/2 hp Hayward Super pump, Hayward Pro Series 300 lb s224T Sand filter, Hayward H150 Gas heater. Aqua bot Turbo Cleaner FC 2-3, Cya 10, PH 7.4, TA 60, CH 30

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    JasonLion's Avatar
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    Re: PH

    Chlroine tabs are very acidic and normally key the PH down all by themselves. If you are still having problems keeping PH down even with chlorine tablets, you should try running with a lower TA level. TA is normally kept high with chlorine tabs specifically to keep the PH from falling, if you don't have that problem, you don't need to keep TA as high.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    dmanb2b's Avatar
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    Re: PH

    Terry, you mention using a lot of chlorine. Is that a daily statement (eg more than 2-3ppm per day) or are you in the process of shocking? If you can post a full set of test results and perhaps describe your issue in a bit more detail, we'd be glad to assist
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    Join Date
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    Re: PH

    Open pool, 20 gallons of bleach later, raised ph and alkalinity with baking soda. 7.4 110 alkalinity. One week later ph went off scale. 1 gallon of muriatic acid to bring ph down to 7.4 alkalinity 60. Using 4 big tab at a time now to raise cya. The bleach must be raising ph. Readings are in signature
    25K Vinyl In ground, 1 1/2 hp Hayward Super pump, Hayward Pro Series 300 lb s224T Sand filter, Hayward H150 Gas heater. Aqua bot Turbo Cleaner FC 2-3, Cya 10, PH 7.4, TA 60, CH 30

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    Mod Squad Bama Rambler's Avatar
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    Re: PH

    Raising your TA to 110 is what put the upward pressure on your pH. Leave it at 60 and see what happens with your pH. You can raise your pH by aeration if you need to.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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