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Thread: Low TA

  1. Back To Top    #1

    Low TA

    just wondering.

    My TA has been around 50 for the past 6 month. Any harm keeping TA 40-50 level???

    BTW. My PH still goes up every week (7.8+) and need to add one gallan of Acid to get it down to 7.4 level.
    25,000gal Inground Plaster Pool
    Pentair WhisperFlo WFE-6 1.5HP X 3
    Pentair Clear and Clear Plus Cartridge 420
    Pentair MasterTemp 300,000 btu Heater
    Compu-Chlor Super Salt System

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    SouthWest Alabama
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    Re: Low TA

    That seems a little low for a plaster pool but we really can't tell for sure without knowing what the rest of your numbers look like. Can you post a full set of test results?

    pH =
    FC =
    CC =
    TA = 50
    CH =
    CYA =
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Re: Low TA

    pH = 7.8
    FC = 7
    CC = 0
    TA = 50
    CH = 350
    CYA = 50 (using some left over shock to bring this up to 70)

    Also, I'm running SWG
    25,000gal Inground Plaster Pool
    Pentair WhisperFlo WFE-6 1.5HP X 3
    Pentair Clear and Clear Plus Cartridge 420
    Pentair MasterTemp 300,000 btu Heater
    Compu-Chlor Super Salt System

  4. Back To Top    #4
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Low TA

    How old is the pool surface?
    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
    http://www.PerfectlyClearPoolService.com

  5. Back To Top    #5

    Re: Low TA

    the pool is about 4 years old.
    25,000gal Inground Plaster Pool
    Pentair WhisperFlo WFE-6 1.5HP X 3
    Pentair Clear and Clear Plus Cartridge 420
    Pentair MasterTemp 300,000 btu Heater
    Compu-Chlor Super Salt System

  6. Back To Top    #6
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Low TA

    I would suggest this - Use baking soda to get the TA to 60-70. Allow it to circulate. Raise your CYA as you planned, that can be done in any order, and use the sock method- the TA can be added while the CYA is dissolving. After several hours retest the PH and TA again, see where the TA ends up. Then I'd adjust the PH down to 7.2 with Muratic Acid.

    Once the CYA is up, see if you dial down your SWG run time a bit, to see if you can reduce the PH from drifting up. How often are you running the SWG now?(what % )
    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
    http://www.PerfectlyClearPoolService.com

  7. Back To Top    #7

    Re: Low TA

    thank you poolmom - will give that a try!!
    25,000gal Inground Plaster Pool
    Pentair WhisperFlo WFE-6 1.5HP X 3
    Pentair Clear and Clear Plus Cartridge 420
    Pentair MasterTemp 300,000 btu Heater
    Compu-Chlor Super Salt System

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