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Thread: Test PH or TA first

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    Test PH or TA first

    Trying to remember which to test first the ph or ta?
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    Mod Squad pooldv's Avatar
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    Re: Test PH or TA first

    Doesn't really matter. Either way is fine.
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    Re: Test PH or TA first

    Quote Originally Posted by Andrew Howard View Post
    Trying to remember which to test first the ph or ta?
    Your question isn't very clear, but you need to get the pH level correct, first, if you are trying to balance your pool.

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    Re: Test PH or TA first

    Doesn't matter at all in terms of testing order.
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    Re: Test PH or TA first

    Quote Originally Posted by Patrick_B View Post
    Doesn't matter at all in terms of testing order.
    As I noted, the question wasn't clear.... testing order is utterly unimportant. "Treating order," which I *think* may be the OP's actual question, is....

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    Re: Test PH or TA first

    Yes your right I am trying to remember which to balance first after testing. The ph or take? Now that I read my question back I wasn't very clear at all.
    16'x34' Kidney 17000 Gallon IG Vinyl liner. Pentair IntelliXF vs pump, Sta-Rite System 3 DE filter. Liquidator, TF-100 Test kit w/ speed stir. Aqua Comfort heat pump, Dolphin Apollo robot, clear solar cover, stamped concrete deck.

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    Mod Squad kimkats's Avatar
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    Re: Test PH or TA first

    TA is the one we worry about last.

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    Mod Squad pooldv's Avatar
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    Re: Test PH or TA first

    Always adjust your PH first. It is important to keep it between 7.2 and 7.8, with 7.5 to 7.o being ideal. Let us know what your tests show and we will advise how to proceed on your TA.
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    Richard320's Avatar
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    Re: Test PH or TA first

    As others have stated, pH adjustment first.

    Check out Effects of Adding Chemicals at the bottom of pool math. Just plug in your numbers and see what the recommended dose of acid will be. Then go down to the bottom and put that into the box. You'll see what adjusting the pH will do to the TA.

    Alkalinity really only needs to be adjusted if 1) You have high Calcium, which makes scaling or etching likely -- that's the calculated CSI number on poolmath -- or 2) the pH climbs really really fast, like having to add acid every day or every other day. Since you have a vinyl pool, etching is never going to be a concern, so you may never need to raise TA. Scaling could be a problem, though.

    Anyway, if you look at the recommended levels for TA on poolmath, it says something like 50-90+. That just means if you're above 90, plug whatever value you currently have in as a target and move on. If you're below 50, pick a number between 50 and 90 as your goal. It doesn't even have to be exact; if you aim for 70 and it asks for some odd amount and you can get it close with two one pound boxes, don't bother opening a third box to get 3 ounces out of it.
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