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Thread: Lowering TA

  1. Back To Top    #1

    Join Date
    Feb 2009
    NW Chicago Suburb, IL

    Lowering TA

    Do I have to lower my PH all the way from 7.6 to 7.2 to have an effect on TA?

    I would feel more comfortable bringing it down to say 7.4 and then aerating to bring back up and then repeat.

    However, I don't want to go the effort if that swing won't really lower my TA

    FC 5
    CC < .5 (just ever so slightly turns a very very light pink when doing the test)
    PH 7.6
    TA 130
    CH 240-270
    CYA 50
    Salt ~3000

    15,000 Gallon IG 15x30 fiberglass
    CoverStar auto safety cover
    SWG Aqua PL-PLUS
    Cartridge Filter
    240,000 LXI Heater

  2. Back To Top    #2
    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Tucson, AZ

    Re: Lowering TA

    Adding acid is what lowers TA. In theory, you can lower your TA just as rapidly by shooting for 7.4, it will just take more frequent additions of a smaller amount of acid.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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  3. Back To Top    #3

    In the Industry

    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: Lowering TA

    It won't hurt to lower it to 7.2. The SWG will make it the pH rise fairly rapidly, so don't worry about it. Just use the Pool Calc and make sure you are confident that you are determining the amount of acid correctly. IF you aren't sure, just post back and we'll confirm it for you.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
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