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Thread: Is my TA too low

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    Join Date
    Mar 2010
    Spring, TX

    Is my TA too low

    I have been doing my testing and I noticed that my pH levels have been staying right around 7.5 for the past two weeks. I have not made any other changes and prior to this my pH level would move from 7.2-7.8 within 3-4 days. I noticed when my pH level was moving my TA level was around 90-110. I tested today after a few weeks and it is at 60. So I am guessing it may be better for me to run a little lower TA level to balance out my pH so that it does not move so much. I know at one point in time last season my sweet spot for TA was around 90, so I guess that is why I am concerned.

    This is not a new plaster pool either as I have been in the house for 3 years and no plaster jobs have been done.

    We have had a few hard rain showers in the past few weeks but it does not appear to be moving.

    Here is a full set of test results


    I am also only losing around 1-2 (high end) FC each day, but with the cold weather lately it has been around .5-1 per day.

    So is this something I should even worry about or just be happy about it. I am going with the later.
    13,000 Plaster IG Pool approx
    Hayward C5030 Cart Filter
    Emerson 1081 EB653 1.0 HP 1.40 S.F. 3450 RPM
    Pool Calculator, Pool School, TF Test Kits

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Is my TA too low

    I am going with the later
    Me, too. Stable pH is hard to obtain but your lower pH seems to have helped a lot.

    I would leave it alone but test it a bit more frequently and add some baking soda if it goes below 60. bring it up to maybe 80 ppm if it does and continue to test. 60-80 may be perfect for your particular pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Is my TA too low

    If your pool is happy at 60-------you should be too! TA is a recommended range as a starting point. DISCLAIMER: Your mileage may vary!
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
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