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Thread: Low TA and high PH

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    Low TA and high PH

    Just opening my pool and balancing water. Water is clear. Tested water: TA 21, PH 7.3, FCU 1.83, TC 1.95, CH 98, CA 47. Added baking soda to first get my TA up. TA rose to 66 but PH went to 8. I still need to get my TA up a little but PH will rise if I add more baking soda. Both will go down if I add acid. How can I get my TA up and lower PH? Historically, my PH wants to stay high.
    Smudge: 18.5k IGP, SWG, Vinyl, Jandy 4 Cartridge Filter, Jandy CJ200 Pump, Heater, Water Fall

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    Richard320's Avatar
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    Re: Low TA and high PH

    Welcome!

    Something does not compute. Two questions for you:
    1) Did you let the water circulate well before testing?
    2) What test kit are you using?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Mod Squad jblizzle's Avatar
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    Re: Low TA and high PH

    How are you testing? Those numbers did not come from one of the recommended test kits.
    Jason, TFP Moderator
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    JasonLion's Avatar
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    Re: Low TA and high PH

    Welcome to TFP!

    Acid will lower the PH a lot, and lower the TA only a tiny bit.

    Baking soda will raise the PH only a tiny bit, and raise TA a lot.

    Each time you adjust one, the other will change by a far smaller amount, so you will get to where you want to be after a fairly small number of adjustments.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Low TA and high PH

    Just figured out that the bottom of th pool calculator gives you the impacts of adding different amounts of chemicals. My life just got easier. Trouble Free Pool site is great!!!!
    Smudge: 18.5k IGP, SWG, Vinyl, Jandy 4 Cartridge Filter, Jandy CJ200 Pump, Heater, Water Fall

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    Mod Squad pooldv's Avatar
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    Re: Low TA and high PH

    Right on!! Life gets better every day with a troublefree pool!
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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