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Thread: My TA for the last week at 140

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    My TA for the last week at 140

    I am having a similar problem. I have my TA for the last week at 140 and PH around 7.2 to 7.4. Today PH was 7.0 and TA reduced to 130 with aeration. What should i be doing to get it lower?
    30 ft. round Aqua Leader agp with dished out center 23,800 gallons; 1.5 hp Hayward pro matrix pump; Hayward EC50 DE filter; solar panels; solar cover

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    frustratedpoolmom's Avatar
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    Re: Cannot lower TA to 100 after aeration

    Why do you need it lower? Do you have water features or an SWG? If not, then TA of 130 is fine.
    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

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    Re: Cannot lower TA to 100 after aeration

    If 130 to 140 is fine I will stay with it. I thought it needed to be around 70 to 100.
    30 ft. round Aqua Leader agp with dished out center 23,800 gallons; 1.5 hp Hayward pro matrix pump; Hayward EC50 DE filter; solar panels; solar cover

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    frustratedpoolmom's Avatar
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    Re: Cannot lower TA to 100 after aeration

    High TA is only an issue because it causes PH to drift up. If you have a source of aeration like an SWG or water features, the drift can be rapid. High PH is the real culprit.
    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

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    Re: Cannot lower TA to 100 after aeration

    Quote Originally Posted by frustratedpoolmom View Post
    High TA is only an issue because it causes PH to drift up. If you have a source of aeration like an SWG or water features, the drift can be rapid. High PH is the real culprit.
    This is the reason why I've been trying to lower TA. When it was higher, the pH clearly drifted back up after adding acid before I started to aerate. What I don't know is whether 130 is a level that will keep the pH stable and in range, since the normal recommendation is 80-120.

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    Re: My TA for the last week at 140

    Moving from 130 to 140 will have little affect. Shoot for 90-100 and see what that does.

    There is an article in Pool School that will tell you how to lower pH through the aeration/acid method.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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