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Thread: Problem getting my TA down

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    Problem getting my TA down

    So i started this year off with high TA (150) and high PH(off the charts using the taylor test kit. i added Muiatic acid to lower the ph to 7.0 to lower the TA and aerated to bring the PH back up into normal levels. I have done this process several times as each time that i do it, it only lowers the TA a portion of what i need it to. so after 3 gallons of acid i finally have the TA at 70ppm (what pool school recommends for a swg), however when i aerate to bring the PH back up the alkalinity also goes back up to 100ppm. am i missing something or do i just need to keep adding acid a little at a time until the TA stays put?

    FC 5
    PH 7.0-7.6
    TA see above
    CYA 60
    CH 60

    KDK

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    linen's Avatar
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    Re: Problem getting my TA down

    Aerating does not raise TA.

    Do you have an autofill that could be masking a pool leak?
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Problem getting my TA down

    no, i dont have an auto fill, but now that you mention it i did backwash and had to fill about 5" of water. not sure where in the process i did that but it could have been the problem. is it beneficial to test my fill water to see what PH and TA of that are.

    KDK

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    Mod Squad jblizzle's Avatar
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    Re: Problem getting my TA down

    Testing your tap water is certainly beneficial to understanding your pool's trends.
    Jason, TFP Moderator
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    Re: Problem getting my TA down

    So after testing my fill water for PH and TA this is what i found: TA was a whopping 460ppm and PH was off the chart. I guess that is what my problem was, it just didn't dawn on my until you said something, thanks for the info.

    KDK

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    Richard320's Avatar
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    Re: Problem getting my TA down

    I wouldn't worry about TA until you're done with the shock process. It's the last thing to mess with, when everything else is good and you're bored.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    dmanb2b's Avatar
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    Re: Problem getting my TA down

    Quote Originally Posted by KDKRETZ
    So after testing my fill water for PH and TA this is what i found: TA was a whopping 460ppm and PH was off the chart. I guess that is what my problem was, it just didn't dawn on my until you said something, thanks for the info.

    KDK
    I go through the same problem. My fill TA is anywhere from 300-400. Lowering the pool water a bit before a good rain storm is a good way to get lower TA fill water for free
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    schertzy82's Avatar
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    Re: Problem getting my TA down

    I once tried to lower my TA last year, but found it to be a waste of time because it would always go back up after topping off the water. As long as you keep your pH in check, then I don't think you need to worry about a high TA.
    Intex 18ft x 52in Ultra Frame Pool, hard plumbed w/skimmer and fountain
    Intex 4000 gph cartridge filter pump
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    Re: Problem getting my TA down

    KDK,

    What city and state do you live in with that high TA?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Problem getting my TA down

    Suffolk, Va

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    Re: Problem getting my TA down

    I should have added that my tap water is from well water but that is all i have.

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    Re: Problem getting my TA down

    That's pretty unusual for TA to be that high in that area. I wonder if others around you have that high TA? Nevertheless, it can be managed just fine and you have the right idea as to how.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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