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Thread: Confusing TA reading

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    Confusing TA reading

    Hi Guys,
    We have a 2 month old pool, and I did the HTH home test.

    The HTH home tester claims that my alkalinity is too low (70) and when I went to a pool shop ( they sell Bioguard)
    they tested the pool water and stated that TA is too high (165)??
    Just want to add... I read that you are suppose to use the plastic lids when testing as mixing with your hands ( or the sweat on it) can change the reading... The pool guy used his palm to block the tube when shaking the test tubes ... could that have influenced the TA reading as well?


    My question is... which test results should I trust the pool shop (bio guard) that says its to high
    Or
    HTH home kit that says its too low?

  2. Back To Top    #2
    Richard320's Avatar
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    Re: Confusing TA reading

    Welcome!

    It's better to trust your own readings. And 70 TA might be just fine for you; without all the readings, it's hard to say. Do you have a Salt Water Chlorine Generator? Do you have hard water? These make a difference.

    Most importantly, have you read Pool School?
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    Patrick_B's Avatar
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    Re: Confusing TA reading

    Welcome Corneliea!

    I agree more info is needed, and perhaps a double check on your test. Not that I assume it's wrong, just making sure. As for high/low TA it is important, but it can only be changed through adjusting pH. Even so, it is not something to get too focused on as pH and especially Chlorine is where you need to focus first.

    Pool School is great, but there is a ton of info there. Take a little at a time and please start with the ABC's of pool Chemistry. Don't get overwhelmed with all the info, just take a bite at a time and ask questions as you need too. We'll be glad to help. Enjoy the forums!
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  4. Back To Top    #4

    Re: Confusing TA reading

    Thanks for the feedback so far
    To answer your questions.... This is the readings that I got
    FC: was betwn 1.5- 3
    ph: 7.6
    Alkalinity: 70
    I only have a basic tester, but the pool guy said the CYA was low and Ch is a bit high 310.
    No we don't have hard water, and no we don't use a Salt Water Chlorine Generator

    I just want to mention that the water is perfectly clear, I am just worried about the alkalinity test that differ so much

    I hope this helps


  5. Back To Top    #5

    Join Date
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    Re: Confusing TA reading

    Go with your readings. Your TA is fine at 70.

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    Mod Squad jblizzle's Avatar
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    Re: Confusing TA reading

    And get one of the recommended test kits before your water is no longer clear
    Jason, TFP Moderator
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    Re: Confusing TA reading

    What do you use for chlorine?

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    Patrick_B's Avatar
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    Re: Confusing TA reading

    Quote Originally Posted by jblizzle
    And get one of the recommended test kits before your water is no longer clear
    Yes on this +1.

    Jason is right. If you want to have control of the pool and know what is happening and good test kit is essential to that.
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