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Thread: Re: PH and TA "issue" (???) - tstex

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    Join Date
    Aug 2012
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    Houston, TX
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    Re: PH and TA "issue" (???) - tstex

    My TA was getting low 45-50 range and I brought it up to 80...my pH has been pretty unstable now... it was 8.2 or a bit higher after adding acid on and off...w all he rain we had, I knew it was going to be higher. So I added some MA and it brought pH to right under 7.0 [I obviously added more than I wanted]. It might be 6.8-6.9. I am running my dual scuppers full blast, plus spa spillover... Two questions:

    1. By swinging a pH from 8.2 to right below 7, does that cause any for future issues for chemistry maintenance?
    2. What impact could it have on pool or equip? I know too acidic is bad for equipment/heater, but hopefully not a one-time event short termed.

    Finally, I also agree on m-acid a the best pH reducer. I too buy from Lowes, the 2-pak gal's of 31.45% for 13.50....yesterday H-Depot had the 31.45% 2-pak for $10.98 so I bought one - it surely wks too....

    thank you,
    tstex
    InGround 15K gal, 18'x30' 3.5' to 5.5' depth w/ 9'x9' spillover Spa, Pebblesheen w/ Travertine, Hayward 3 HP VSP, Hayward C4030 Cartridge, Hayward 1.5 HP for 2 Scupper columns, ProLogic, PL-PS-8 Panel, Hayward 400K BTU Heater, 3 ColorLogic LED, Spa Blower, TF-100 w S-Stick, QC Tiger Shark, Autofill

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    Richard320's Avatar
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    Re: PH and TA "issue" (???) - tstex

    Every time you add acid, you lower pH and TA. Check out effects of adding chemicals at the bottom of poolmath.

    With a bunch of aeration and 80 TA, your pH is probably already above 7.0, so it's neutral-to-alkaline. Metal equipment will be okay if it's above 7. Swimmers prefer 7.2>7.8.

    Aeration raises pH without raising TA.

    My advice is to go easier on chemical additions or you'll be forever on the chemical yo-yo. You might even want to double-check the volume you've been inputting on poolmath. If your pool isn't as big as you think, you'll be overdosing everything.
    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!

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    Re: PH and TA "issue" (???) - tstex

    Thank you Richard - bingo...

    I just took another pH reading and it was 7.0 - 7.2 range now...we've had so much rain, the aeration factor is really skewing all. Also, when I recently had my pump replaced, the tech changed-up the pool circulation times/speeds. Before, I was at a daily 8am-4pm 80% pump speed. now there's 4 diff time throughout the day and night. A high speed from 6am-8am and 8pm-10pm, then two lower speeds. I think even at the lower speeds w the spa-spillover, I am getting reduced pH due to more aeration, so I have now have 2-3 diff variables: rains, diff pool speeds/circulation times and increased TA.

    I'm going to closely monitor and limit all controllable variables now, then deal w the rain. Hard to shoot 3 moving targets at the same time w one pistol.

    Rgds, tstex
    InGround 15K gal, 18'x30' 3.5' to 5.5' depth w/ 9'x9' spillover Spa, Pebblesheen w/ Travertine, Hayward 3 HP VSP, Hayward C4030 Cartridge, Hayward 1.5 HP for 2 Scupper columns, ProLogic, PL-PS-8 Panel, Hayward 400K BTU Heater, 3 ColorLogic LED, Spa Blower, TF-100 w S-Stick, QC Tiger Shark, Autofill

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