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Thread: TA level low after decreasing PH

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    Join Date
    Aug 2013
    Location
    Dallas, Texas
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    Question TA level low after decreasing PH

    Hi All,

    I have been trying to lower a very high PH level (well over 8.xx), I have been adding MA to lower and I think I added a little to much but my PH is now raising. I have noticed that my TA however has dropped to ~20 from 120. Should I look at raising my TA with Baking Soda or see were my PH land in a few days and test again?

    Any danger of a low TA for the pool or swimmers?

    Latest test results

    FC 7.5
    CC .5
    PH 7.2
    TA 20
    CH 220
    CYA 50

    Thanks
    O
    17500 Gallons, IG, Plaster, DE Filter, Built 1997, No Spa, Polaris 280

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
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    Re: TA level low after decreasing PH

    Add baking soda to bring the TA back up to at least 60ppm. It should not affect the pH too much, but you can check an hour after adding and circulating the baking soda.

    The low TA can contribute to making the water aggressive to your plaster, so I would not leave it that low.

    But, it would not affect any swimmers.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  3. Back To Top    #3

    Join Date
    Aug 2013
    Location
    Dallas, Texas
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    Re: TA level low after decreasing PH

    So I added Baking Soda to increase my TA howeber my PH looks like its near 7.8 to 8.2 again. Any idea what next?

    I put the baking soda in about 2 hours ago - could that be the reason for a high PH, should I wait to take a PH reading?

    FC 8
    CC .5
    PH 7.8 - 8.2 (looks closer to 8.2)
    TA 70
    CH 220
    CYA 50
    Last edited by onedah; 09-07-2014 at 07:24 PM. Reason: added more detail
    17500 Gallons, IG, Plaster, DE Filter, Built 1997, No Spa, Polaris 280

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
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    Tucson, AZ
    Posts
    37,389

    Re: TA level low after decreasing PH

    Add muriatic acid to lower the pH.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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