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Thread: Low level of TA

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    Join Date
    Sep 2010
    Roatan - Bay Islands

    Low level of TA

    My TA level is at 50 and I do not seem to be able to keep it at 80/100. Is it because I have to constantly use muriatic acid to balance the regular increase of PH? I am using 12% bleach and in another thread of mine it's been discussed that the quality of my bleach might be the cause of the regular increase of the PH level.
    Should I worry about a TA of 50 or leave it this way ?
    10,000 glns bean shaped inground plaster pool - Pentair SD60 sand filter - Pentair 3/4 HP pump

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    dmanb2b's Avatar
    Join Date
    Apr 2009

    Re: Low level of TA

    You can raise TA to 60 using plain old baking soda
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Low level of TA

    PH usually goes up because of high TA combined with aeration. Aeration can come from a negative edge, SWG, waterfall, fountain, water slide, etc. PH is much more stable when the TA is low and you don't try to keep the PH too low. For most pools TA around 60 or 70 and PH around 7.5-7.8 works. Sometimes, when you have a lot of aeration, that isn't enough. There are other things you can try in that case.

    PH can also go up because of plaster that was applied less than a year ago.

    It is also possible for the PH to go up from some brands of bleach which include excess lye, but that is quite rare in the US these days.
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