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Thread: Lowering TA, 1st Round TA Dropped, 2nd Round TA didn't. Why?

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    Lowering TA, 1st Round TA Dropped, 2nd Round TA didn't. Why?

    Salt Water pool
    70,000 Liters
    Salt=3200ppm

    Before Adjusting
    FC=2.0
    CC=0
    PH=8.0
    TA=230

    1st Round of Muriatic Acid (3 Litres), No aeration yet
    FC=3.0
    CC=0
    PH=7.4
    TA=180

    2nd Round of Muriatic Acid (3 Litres), Added Aeration, plus added CYA in sock for slow dilution
    FC=3.0
    CC=0
    PH=8.0
    TA=180

    1st round dropped TA by 50 PPM, 2nd round did not drop it by any.
    Pool has circulated for 8 hours between tests.

    I never seen this happen before, is there a logical answer, could it have something to do with adding CYA?

    I started the 3rd round (3 Litres) tomorrow I will test again

    Thanks
    Intex Ultra Frame 16 x 48, SWG - copper disconected, 2650 Sand filter, Intex PVC mods, Aqua Critter pool cleaner, ECO Saver Solar panels

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    duraleigh's Avatar
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    Apr 2007
    Location
    Sebring, Florida
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    Re: Lowering TA, 1st Round TA Dropped, 2nd Round TA didn't.

    It's not a perfectly smooth path but it will work. Rounds 3,4 or whatever it takes, it will work.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Lowering TA, 1st Round TA Dropped, 2nd Round TA didn't.

    Ok thanks Dave,

    I have been helping my neighbors and friends and this
    Is the first time this has happened. With not having
    A logical answer it left me looking like I didn't know
    What I was doing.

    I guess we will caulk that up to it happens.

    Cheers
    Intex Ultra Frame 16 x 48, SWG - copper disconected, 2650 Sand filter, Intex PVC mods, Aqua Critter pool cleaner, ECO Saver Solar panels

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