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Thread: fix low ph or high ta first?

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    Join Date
    Jun 2009
    Willamette Valley, Oregon

    fix low ph or high ta first?

    Hi there. I just converted from baqua to chlorine starting last monday thanks to this site. It only took three days to get the water clearer than its ever been. My chlorine level is holding overnite for past three days and CC is below .5 so I'm moving on to balancing the water.

    My taylor 2006 test this morning shows

    FC 5
    CC .5
    PH 7.2
    TA 130

    I'm confused about which to treat first the ph or the ta. from what I've read, it says to lower the the ph to 7.2 with acid to get the ta down and then aerate to raise ph back up, but my ph is already at 7.2. So do I raise my ph with borax and then lower is with acid? Help!!! Oh...I also added 4 lbs cya 2 days ago as suggested by your calculator (which works awsome on my iphone by the way)

    Happy Father's Day by the way
    16X32X48" Doughboy AG with 6' deep end, 1.5 HP/Sandfilter

  2. Back To Top    #2
    Bob_Funk's Avatar
    Join Date
    May 2009
    Seattle-It really rains all the time

    Re: fix low ph or high ta first?

    No, you want to raise your pH thru aeration, & then when it reaches 7.8 lower it down to 7.2 with acid, which will also lower your TA, repeat until your TA is where you want it

    Read this article from the pool school
    I consider myself very lucky I found this site before the pool store found me-pool owner since Nov 2008- Stunningly clear 17,000 gal fiberglass pool, thanks to this site, installed in 1982-24" 3.1sq. ft sta-rite sand filter, 1 hp - 2 speed wisperflo pump-WFDS-4

  3. Back To Top    #3

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: fix low ph or high ta first?


    I would leave both your TA and pH alone. They're in the ballpark and I see no reason to adjust them.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4
    reebok's Avatar
    Join Date
    Apr 2009
    Lakeland, FL

    Re: fix low ph or high ta first?

    yeah that whole lowering ta thing is mainly if you're having a frequent ph rise (frequent acid additions) and want to slow it down. you don't have to adjust ta just to reach a certain number, it's whatever works for your pool.
    16x32 21,000 gallon in-ground exposed aggregate, 1.5hp pump, 120 sqft catridge filter, birdcage, solar panels, aquavac tigershark qc robot.

  5. Back To Top    #5
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: fix low ph or high ta first?

    Have you changed your filter media and added CYA?
    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

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