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Thread: Lowering TA. PH tough to get back up.

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    prosper's Avatar
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    Jan 2013
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    Lowering TA. PH tough to get back up.

    New pool here. Water brought in with tanker trucks.
    TA a bit high at 140.

    I've got a SWG, but have not installed it yet.

    Anywho....

    I'm going to get TA down to 80 and started the process yesterday.

    Pre-start numbers:
    TC 3
    PH 7.6
    CYA 50
    CH 70
    TA 140

    Monday 3:30PM - PH 7.6 -- TA 140
    Monday 3:45PM - Added 1 Gallon of 31.45% MA and start aerating with 3 headed homemade return fountain like others on this site use.
    Monday 4:30PM - PH 7.0 -- TA 120
    Monday 9:40PM - PH 7.2 -- TA 120
    Tuesday 9:30AM - PH 7.2 -- TA 110

    Pump is running 24x7 during this process. Aerator is also attached and running entire time.

    So, to me, everything was going as planned until the Tuesday morning test.
    I was expecting to see PH 7.6ish and TA 120.

    Odd eh?
    35k gallon 20x45 inground concrete with vinyl liner - Stamped Concrete deck
    Pentair WhisperFlo 2HP - Pentair FNS Plus 60 DE
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    JasonLion's Avatar
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    Re: Lowering TA. PH tough to get back up.

    Lowering TA can take quite a while. Minor fluctuations in your test results are to be expected along the way.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Lowering TA. PH tough to get back up.

    Once you start that SWG I'm betting your pH starts swinging up without issue.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    prosper's Avatar
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    Re: Lowering TA. PH tough to get back up.

    Took a little longer than I expected for PH to rise with aeration, but all is well now.
    Will just repeat process until TA is where I want it.

    Monday 3:30PM - PH 7.6 -- TA 140
    Monday 3:45PM - Added 1 Gallon of 31.45% MA and start aerating with 3 headed homemade return fountain like others on this site use.
    Monday 4:30PM - PH 7.0 -- TA 120
    Monday 9:40PM - PH 7.2 -- TA 120
    Tuesday 9:30AM - PH 7.2 -- TA 110
    Tuesday 10:00PM - PH 7.6 -- TA 110
    35k gallon 20x45 inground concrete with vinyl liner - Stamped Concrete deck
    Pentair WhisperFlo 2HP - Pentair FNS Plus 60 DE
    Heat Siphon heat pump - Compupool cpx48
    Blue Diamond RC robot vacuum - TF100 testkit

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    Richard320's Avatar
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    Re: Lowering TA. PH tough to get back up.

    Have a pool party. A lot of splash fights and cannonballs and children flailing around trying to swim will aerate things nicely.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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