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Thread: Low TA and normal pH....hmmmm

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    Low TA and normal pH....hmmmm

    So I have had a great opening and at this point only see one point that concerns me - my low TA. I know I can add baking soda to raise it, but that will also send my pH up out of range I believe. So what's a girl to do - just slowly add bs and test a lot?

    Here are today's numbers:
    FC - 3
    pH - 7.5
    TA - 40
    CYA - 40
    ____________________________________________________________ _____________________

    Vinyl free form IG 30,000 gallon pool
    Hayward S270T Pro Series High Rate Sand Filter
    AO Smith 1081 Centurion Pool Pump
    Sliding Board
    TF50 Test Kit and Taylor Ph test kit
    Aquabot Tempo

    Location: Lewes, DE

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Low TA and normal pH....hmmmm

    Baking soda has a very minor effect on pH, probably not even noticeable if you only raise the TA to ~70ppm.

    Are you using poolcalculator to see how chemicals affect your levels?

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    Join Date
    Feb 2008
    Flower Mound, TX

    Re: Low TA and normal pH....hmmmm

    Although your pH is ok right now, one problem that we see with TA readings that are very low is that your water doesn't handle pH swings as well. TA is a buffer system and this means that it acts as a cushion for large pH swings from chemical additions. 60 is about as low as most would want it to be. I see no harm in bumping it up with the addition of baking soda.

    Have you checked to TA of your fill water. It may be the cause of your low TA.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
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