Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Rising TA

  1. Back To Top    #1

    Join Date
    Jun 2011
    Location
    Long Island, NY
    Posts
    92

    Rising TA

    Morning All,

    Question for you all. Been dialing in my pump runtime and SWG percentage and had some small green algae spots a few days ago. Have been shocking since Friday and have passed overnight loss test with no CC this morning and water looks great. Tested TA this morning and it's risen to 110 and PH from Friday(before I started shocking) was 7.2. TA was 80 last week. I have a vinyl liner pool and was wondering if I should do anything to lower TA at this point or just wait until FC drops to below shock level And then retest PH and go from there. Thoughts?
    25K Gallon IG Vinyl Liner w/ concrete walls True "L" 16X32X16, Hayward EcoStar VS pump, Hayward Swimclear C4030 Filter, Hayward 21104T Heat Pro Titanium Heat Pump, Hayward Aqua Plus SWG + Automation, 2 Hayward Color Logic 4.0 LED lights, Polaris 9300 cleaner. TF-100 test kit.

  2. Back To Top    #2

    Join Date
    Apr 2011
    Location
    Lynchburg VA
    Posts
    393

    Re: Rising TA

    I would wait until the FC drops and then retest. If the TA is still high you can lower it with muriatic acid and then raise your PH back up with aeration.
    18x36 Vinyl In-ground w/roman ends 27,400G, Hayward 3/4hp with 300# sand filter. Hayward heat pump heater

    Pool School
    Pool Calculator
    Test Kits

  3. Back To Top    #3

    Join Date
    Jun 2011
    Location
    Long Island, NY
    Posts
    92

    Re: Rising TA

    Sounds like a plan. Thx so much for the quick response.
    25K Gallon IG Vinyl Liner w/ concrete walls True "L" 16X32X16, Hayward EcoStar VS pump, Hayward Swimclear C4030 Filter, Hayward 21104T Heat Pro Titanium Heat Pump, Hayward Aqua Plus SWG + Automation, 2 Hayward Color Logic 4.0 LED lights, Polaris 9300 cleaner. TF-100 test kit.

  4. Back To Top    #4

    Join Date
    Jun 2011
    Location
    Long Island, NY
    Posts
    92

    Re: Rising TA

    Need a little more guidance. FC is dropping and is currently at 10 and I've tuned down the SWG a little more to drop into my sweet spot. TA is still at 110 but my PH is perfect at 7.2. My question is how important is it to get TA down to 70? According to Pool Calculator adding 64 oz of 20 baum acid would only lower TA by 10? I would need to add 250 oz of acid to get the TA down to 70. Obviously I cant do that in one shot or my PH would plummet to under 5. Should I just keep adding small amounts of acid to lower TA and then aerate to get PH back to 7.2 after each addition?
    25K Gallon IG Vinyl Liner w/ concrete walls True "L" 16X32X16, Hayward EcoStar VS pump, Hayward Swimclear C4030 Filter, Hayward 21104T Heat Pro Titanium Heat Pump, Hayward Aqua Plus SWG + Automation, 2 Hayward Color Logic 4.0 LED lights, Polaris 9300 cleaner. TF-100 test kit.

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Rising TA

    The main reason to lower the TA is to stop the PH from constantly rising. If the PH is only going up very slowly, you can take it slow and only lower the PH down to 7.2 when it gets up to 7.8. If you are in a hurry you can lower the PH back down to 7.2 as often as you want and also add some extra aeration to speed up the PH rise so you can add more acid sooner. There is slightly more detail in the Pool School article on how to lower TA.
    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

  6. Back To Top    #6

    Join Date
    Jun 2011
    Location
    Long Island, NY
    Posts
    92

    Re: Rising TA

    Sounds good Jason and TY. Will keep close tabs on PH and lower TA slowly by acid addition. As long as I'm not seeing large PH swings then I will take my time to lower TA.
    25K Gallon IG Vinyl Liner w/ concrete walls True "L" 16X32X16, Hayward EcoStar VS pump, Hayward Swimclear C4030 Filter, Hayward 21104T Heat Pro Titanium Heat Pump, Hayward Aqua Plus SWG + Automation, 2 Hayward Color Logic 4.0 LED lights, Polaris 9300 cleaner. TF-100 test kit.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •