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Thread: PoolMath calculator doesn't seem to be working

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    Join Date
    Jul 2016
    Madison, WI

    PoolMath calculator doesn't seem to be working

    Hmmm. I'm trying to use PoolMath to determine the amount of acid to add to reduce my TA from 285 to 80 in my new (still empty) hot tub but I must be doing something wrong. I enter 295, 7.6 for pH (both left and right boxes), and 285 (left box) and 80 (right box) for TA (TA values come from local utility, verified by my test kit). I then press Calculate and....nothing. I get NO recommendation for acid addition to lower TA. Anybody have any idea what I'm doing wrong?

  2. Back To Top    #2

    TFP Guide
    YippeeSkippy's Avatar
    Join Date
    Jan 2012
    'burbs of Augusta, Georgia

    Re: PoolMath calculator doesn't seem to be working

    That's because you're not specifying a drop in pH, which is how you reduce TA. Drop your goal pH to 7.2, then it will work.

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