Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: TA is low

  1. Back To Top    #1

    Join Date
    Feb 2014
    Location
    Central California
    Posts
    17

    TA is low

    Since taking over my own pool care 3 months ago things have been mostly good. I've been focused on keeping the FC and PH balanced with liquid chlorine and muriatic acid.

    I decide to check the TA and CH today. The TA came in low at 40... it had been around 100 when I last checked it.

    So I'm going to add baking soda to bring the TA up. How often do folks check some of the other chem levels.

    Thanks

    Today -

    TA=40
    CH=260
    pH=7.4
    FC=4
    CYA=30
    18K gal, IG Concrete (colored), Hayward C3025 cart. filter, Hayward Tristar 2-speed 1.85 HP pump, pool is 4yrs old, Hayward Navigator XL vac

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: TA is low

    I check TC & PH daily, everything else except CYA weekly, and CYA two or three times a year.
    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

  3. Back To Top    #3
    Charlie_R's Avatar
    Join Date
    May 2013
    Location
    Mexico, MO
    Posts
    2,156

    Re: TA is low

    What Jason said. No need to do any more than that.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  4. Back To Top    #4
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: TA is low

    I check FC and pH regularly, TA monthly and CYA maybe 2x a summer unless I'm adjusting it.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  5. Back To Top    #5

    Join Date
    Feb 2014
    Location
    Central California
    Posts
    17

    Re: TA is low

    Hi,

    I'm baaaack....

    So when I started this thread my TA was at 40. I got a 12lb bag of baking soda from Costco. Added the whole thing over a few days and brought the TA back up to around 100.

    But here we are a month later and when I checked my TA today it's at 60. I am adding muriatic acid every few days to bring the pH down. It will rise to 7.6ish and I bring it back down to 7.4ish.

    Just not sure if this is normal or not with the TA.

    Water is nice and clear (despite a recent visit from my 6 yr. old niece and nephew)

    Here are my latest test results -

    FC - 4.0
    CH - 300
    pH - 7.5
    CYA - 30
    TA - 60
    18K gal, IG Concrete (colored), Hayward C3025 cart. filter, Hayward Tristar 2-speed 1.85 HP pump, pool is 4yrs old, Hayward Navigator XL vac

  6. Back To Top    #6

    Join Date
    Jun 2013
    Location
    Fontana California
    Posts
    56

    Re: TA is low

    Why not see if your pH will stabilize at 7.6 or 7.8 with a TA of 70 or 80? It could be that your TA is falling because of your constant additions of muriatic acid to keep your pH at 7.4.

    My TA was around 110 until I held my pH at 7.2 with muriatic acid for about a week. At the end of the week my TA was down to 70. Now that my TA is 70 I don't have to add muriatic acid as often because my pH doesn't rise so fast.
    Last edited by cottielee; 06-09-2014 at 01:46 AM. Reason: Clarity
    14K Gallon IG Gunite Pool built in 2005, Century Centurion 1 1/2 HP Pump
    Pentair Clean & Clear 420 Sqft. Cartridge filter, MiniMax Pentair NT Heater, The Pool Cleaner
    Taylor K-2005 test kit with Taylor K-1515-A FAS-DPD Chlorine Test. SpeedStir

  7. Back To Top    #7
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: TA is low

    Every time you add acid to lower pH, you also lower TA a little.

    What I don't understand is why you do you even bother adjusting it at 7.6 pH? Your CH is not so high that you have to watch CSI like a hawk. You may discover that if you leave pH alone, it will just settle in at 7.6 or 7.7 and stay there for weeks.
    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!

  8. Back To Top    #8

    Join Date
    Feb 2014
    Location
    Central California
    Posts
    17

    Re: TA is low

    Quote Originally Posted by Richard320 View Post
    Every time you add acid to lower pH, you also lower TA a little.

    What I don't understand is why you do you even bother adjusting it at 7.6 pH? Your CH is not so high that you have to watch CSI like a hawk. You may discover that if you leave pH alone, it will just settle in at 7.6 or 7.7 and stay there for weeks.
    It's just me being new to this whole thing. I'll try getting the pH settled a little higher and see what happens.

    Thanks
    18K gal, IG Concrete (colored), Hayward C3025 cart. filter, Hayward Tristar 2-speed 1.85 HP pump, pool is 4yrs old, Hayward Navigator XL vac

Posting Permissions

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