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Thread: Numbers good but need PH help???

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    Join Date
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    Numbers good but need PH help???

    I am adding 1/2 gal of acid (MA) every 4-7 days to maintain 7.5-7.8, any ideas what to do?

    FC 3.5
    CC 0
    PH 8.2 (currently, will be adding another 1/2 gal MA)
    CH 300
    TA 80
    CYA 65
    Salt 3800

    CYA could be a little higher but I am worried to add more conditioner and CYA get too high. I am running pump 12hr/day with SWG at 50%.
    Water has been clear since initial filling.
    Thanks
    IG gunite Edmond, OK(OKC), 18x36 freeform ~20K, 4-8' deep, Pentair equip, (2) 3hp VS+ pump, 520 cart filter, 3 LED, Easytouch8, ItellichlorIC40 SWG, Polaris 3900 cleaner, Spa 8'x18"raised, 20' raised bond beam 2 sheers, Stonescape Tahoe Blue quartz plaster, TF-100 kit.
    Feb. 25, 2014 dig started, May 24, 2014 filled.

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    Mod Squad tim5055's Avatar
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    Re: Numbers good but need PH help???

    Your plaster is only three months old? I would test and adjust a little more often so it doesn't get so high. Looking at your signature you have a lot of things happening to aerate the pool in addition to the curing gunite. pH is going to rise.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Kiss4aFrog's Avatar
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    Re: Numbers good but need PH help???

    What he said, test daily or every other. If you are reading 8.2 you are at the top of the range and might actually be a little or a lot higher. Since you don't know how high it is you should make an adjustment, let it mix for 30 minutes and test again to make sure it's come down to your target.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
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    Re: Numbers good but need PH help???

    Thanks for the feedback! I updated sig profile and yes the plaster is new. I will check more often and add smaller amounts of MA too.
    How long does this go on with new plaster??
    Thanks again.
    IG gunite Edmond, OK(OKC), 18x36 freeform ~20K, 4-8' deep, Pentair equip, (2) 3hp VS+ pump, 520 cart filter, 3 LED, Easytouch8, ItellichlorIC40 SWG, Polaris 3900 cleaner, Spa 8'x18"raised, 20' raised bond beam 2 sheers, Stonescape Tahoe Blue quartz plaster, TF-100 kit.
    Feb. 25, 2014 dig started, May 24, 2014 filled.

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    Mod Squad tim5055's Avatar
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    Re: Numbers good but need PH help???

    Quote Originally Posted by Flatlander View Post
    Thanks for the feedback! I updated sig profile and yes the plaster is new. I will check more often and add smaller amounts of MA too.
    How long does this go on with new plaster??
    Thanks again.
    Check out the Pool School article about starting up new plaster.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Kiss4aFrog's Avatar
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    Re: Numbers good but need PH help???

    You can expect it to be using a lot of acid the first 6 to 12 months. Smaller more frequent additions would be easier on the plaster.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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