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Thread: Should I Lower the TA?

  1. Back To Top    #1

    Join Date
    Jul 2009
    Long Island, NY

    Should I Lower the TA?

    Here are the TF-100 test results from this morning:

    pH= 7.6
    FC= 4.5
    CC= 0
    TA= 90
    CYA= 30
    TEMP=68 degrees

    After testing, we added 3 more pounds of CYA to begin increasing to a target level of 70. Is the TA high enough that we need to use the MA/aeration method to bring it down? Does TA tend to creep up over time?

    Also, we purchased 55 pounds of boric acid to add borates to the water but have not done it yet. What should we do in preparation for the addition of the boric acid?
    Free-form concrete walls with vinyl liner, 18,000 gallon capacity, Jandy 1.5HP e-Pump, Jandy DEV48 DE filter (using cellulose media), Jandy AE2500 heat pump, Jandy Aqualink Power Center with 14-blade cell kit and Jandy PDA-P8 wireless control system.

  2. Back To Top    #2

    Re: Should I Lower the TA?

    read I think your TA will need adjusting afterwards anyway.
    20k gal. IG fiberglass/plaster rectangle 32'x16'
    Hayward Superpump 3/4 H.P. primary Hayward model 5060 Booster Pump
    Hayward Pro Series High Rate Sand Filter
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  3. Back To Top    #3
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Should I Lower the TA?

    I suggest you lower TA to your target (mine would be 70) before adding borates.

    Adjusting TA after adding borates is rather difficult.
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    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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