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Thread: Switched to Bleach and now adding acid daily

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    Switched to Bleach and now adding acid daily

    So I finally got my CYA down and switched to a Stenner injection pump for bleach instead of Tri-Chlor pucks.

    The pump is working like a charm and keeping my FC at about 5. But now I am having to add about 16 oz of muriatic acid daily. Was hoping to not have to add chemical everyday. Is there something I can do? Last year using the Tri-Chlor pucs, my Ph was super constant. Now it creeps up to 7.8 to 8.0 seemingly every day.

    BTW, my TA seems to be about 120.
    14,800 gallons in-ground vinyl. sand filter. 1.5 hp pump

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    Kiss4aFrog's Avatar
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    Re: Switched to Bleach and now adding acid daily

    You have your CYA down to what ??

    How about a full set of results
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    Mod Squad jblizzle's Avatar
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    Re: Switched to Bleach and now adding acid daily

    Well the high TA is likely most of your problem with the pH.
    Jason, TFP Moderator
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    Re: Switched to Bleach and now adding acid daily

    Cya = 40
    14,800 gallons in-ground vinyl. sand filter. 1.5 hp pump

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    Richard320's Avatar
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    Re: Switched to Bleach and now adding acid daily

    How old is that pool? You might still be suffering from curing plaster, you just didn't know it because trichlor is very acidic.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Mod Squad pooldv's Avatar
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    Re: Switched to Bleach and now adding acid daily

    CYA is good. Here is a link on how to lower your TA, aim for 70-80.

    http://www.troublefreepool.com/conte...tal-alkalinity

    Here are your Recommended Levels
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    Re: Switched to Bleach and now adding acid daily

    Quote Originally Posted by Richard320 View Post
    How old is that pool? You might still be suffering from curing plaster, you just didn't know it because trichlor is very acidic.
    vinyl pool

    - - - Updated - - -

    Looks like time for acid and aeration. Tons of PVC laying around. I might build a Franken-aerator.
    14,800 gallons in-ground vinyl. sand filter. 1.5 hp pump

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    Patrick_B's Avatar
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    Re: Switched to Bleach and now adding acid daily

    Your pH stayed lower because of the pucks. Now you have to replace that acidity with something.
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    Re: Switched to Bleach and now adding acid daily

    I had real bad Ph bounce due to high TA when I first filled my pool, was adding MA twice a day to start with


    Test daily and use poolmath to calculate correct MA dose - keep a note of this and you will see that as the TA drops the MA additions get smaller and further apart, until you get to a point where the pH doesn't rise very quick.

    Just maintaining the Ph in range will lower the TA over time, repeatedly lowering Ph to 7.2 + aeration gets you there quicker. Will use the same total amount of MA either way


    Thanks to Richard320 for those tips, really helped my understanding!
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