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Thread: PH Bounce

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    PH Bounce

    Long time pool guy here, and my pool has become troublesome to maintain PH. (PH keeps rising). Pool is perfectly balanced and has been for years and has never been subject to this. The only change in my situation is that a line of Leyland Cypress by my pool have been dropping tons of dead needles. Can these buggers raise PH? Any botanist/chemists out there?
    30,000 gal gunite inground w/white plaster walls and attached spa. Built in 2000

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    Mod Squad JVTrain's Avatar
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    Re: PH Bounce

    What is your current TA level and pH? How are you testing the pool?
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: PH Bounce

    TA is a bit low 100 and ph I maintain but bounces to 7.8-8 after awhile and I tweak it back down. Muriatic acid. Use Bioguard test kit and Bioguard test strips for quick look. Going to deal with TA and see if that helps. Was 125-150 a few weeks ago.Thanks
    30,000 gal gunite inground w/white plaster walls and attached spa. Built in 2000

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    Texas Splash's Avatar
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    Re: PH Bounce

    I suspect the reason Joel asked about your TA is because you'll find here at TFP that when you reference our Pool School - Recommended Levels chart, your TA could actually be lower for your pool type. Using the full range of TA down to about 70-80 could help prevent the pH from rising so quickly. To do that, just reference the Pool School - Lower Total Alkalinity page.

    As for testing, we at TFP always recommend either a TF-100 or Taylor K-2006. Either kit has a fantastic reputation for accuracy and dependability. Personally, I recommend the TF-100, but either will work.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Mod Squad JVTrain's Avatar
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    Re: PH Bounce

    Pat hit the nail on the head. 100 ppm TA is not low for your pool. Let your TA drift down to 70 ppm and you'll have less pH rise.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Re: PH Bounce

    Thanks guys. I was going on the recommendations of the pool maintenance company that was recommended by my builder (Maryland Pools - now out of business) I'll try the lower TA and let you know.
    30,000 gal gunite inground w/white plaster walls and attached spa. Built in 2000

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