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Thread: I'm in a PH TA swing pickle

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    lhelander's Avatar
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    I'm in a PH TA swing pickle

    Hi, Never had this problem before but lately I find myself chasing high PH (7.9) with acid (14.5%) which in turn is lowering my TA (currently 54) then raising TA (to 80) with baking soda but still can't seem to get the PH down without my TA going way down again. Feel like I'm chasing my tail.
    I try to keep PH at 7.8 and lower it slightly as the water warms up and TA 70-80 is usually where my pool settles in.
    Any suggestions?
    Water Temp 71
    FC 4
    PH 7.9
    TA 54
    CH 500
    CYA 50
    Salt 2390
    Borates 50
    CSI -0.18
    CC .30
    Built 2003, 15,000 Gal w/ Spa, In Ground Plaster
    Pentair CCP420 Clean & Clear Plus Cartridge Filter
    Pentair Intelliflo VS-3050 Variable Speed Pump
    Pentair Mini Max 4000 BTU Heater - TF-100 & ColorQ Pro 7
    Pentair Sand Shark Cleaner

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    Mod Squad jblizzle's Avatar
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    Re: I'm in a PH TA swing pickle

    Welcome to TFP!

    How are you measuring a TA of 54? It is usually in increments of 10ppm.

    Stop raising the TA and the pH will not rise as fast.
    Jason, TFP Moderator
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    Mod Squad pooldv's Avatar
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    Re: I'm in a PH TA swing pickle

    Yes, TA in the 50-60 range is OK if your PH remains stable.
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    lhelander's Avatar
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    Re: I'm in a PH TA swing pickle

    Quote Originally Posted by jblizzle View Post
    Welcome to TFP!

    How are you measuring a TA of 54? It is usually in increments of 10ppm.

    Stop raising the TA and the pH will not rise as fast.
    I use TF-100 and when I'm lazy
    ColorQ Pro 7 which reads tighter increments
    Built 2003, 15,000 Gal w/ Spa, In Ground Plaster
    Pentair CCP420 Clean & Clear Plus Cartridge Filter
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    Mod Squad tim5055's Avatar
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    Re: I'm in a PH TA swing pickle

    Quote Originally Posted by lhelander View Post
    I use TF-100 and when I'm lazy
    ColorQ Pro 7 which reads tighter increments
    Don't confuse specificity of the results given by the ColorQ with accuracy. Many folks,when comparing results between Taylor reagents and the ColorQ report inaccuracy in its results.
    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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    lhelander's Avatar
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    Re: I'm in a PH TA swing pickle

    Quote Originally Posted by tim5055 View Post
    Don't confuse specificity of the results given by the ColorQ with accuracy. Many folks,when comparing results between Taylor reagents and the ColorQ report inaccuracy in its results.
    Just letting you know how I came up TA = 54.
    ColorQ although maybe not specifically accurate used on a daily basis lets me know how the pool is doing in general. I never use it for say CH or CYA and frequently check against the TF-100. It's a good test for chlorine which I test daily and while I'm at it do the PH and TA. Once you get the "feel" of the range of the test it works for me - Quick and easy. I really think the Chlorine and PH tests are spot on or at least within 0.1 PPM. However TA has been off up to 10 to 15PPM - but at least I'm aware of that.
    Built 2003, 15,000 Gal w/ Spa, In Ground Plaster
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    Patrick_B's Avatar
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    Re: I'm in a PH TA swing pickle

    Why would you use something that is inaccurate and sometimes off, as you mentioned.

    Since you asked for suggestions, I'd suggest sticking with one kit and stop adding BS to manipulate the TA as Blizzile suggests. Focus on pH, and it may well reach a steady point and stabilize at a TA lower than 80.
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    lhelander's Avatar
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    Re: I'm in a PH TA swing pickle

    Quote Originally Posted by Patrick_B View Post
    Why would you use something that is inaccurate and sometimes off, as you mentioned.

    Since you asked for suggestions, I'd suggest sticking with one kit and stop adding BS to manipulate the TA as Blizzile suggests. Focus on pH, and it may well reach a steady point and stabilize at a TA lower than 80.
    Appreciate the suggestion - I'll do that... Is a stable PH of 7.8 too high still? By the end of May my water temp is usually around 78. What do you think?
    Built 2003, 15,000 Gal w/ Spa, In Ground Plaster
    Pentair CCP420 Clean & Clear Plus Cartridge Filter
    Pentair Intelliflo VS-3050 Variable Speed Pump
    Pentair Mini Max 4000 BTU Heater - TF-100 & ColorQ Pro 7
    Pentair Sand Shark Cleaner

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    Mod Squad pooldv's Avatar
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    Re: I'm in a PH TA swing pickle

    PH at 7.8 is fine. I think water at 78 is too cold, I prefer 85.
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    lhelander's Avatar
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    Re: I'm in a PH TA swing pickle

    Quote Originally Posted by pooldv View Post
    PH at 7.8 is fine. I think water at 78 is too cold, I prefer 85.
    Thanks... Oh it's cold alright but only heats naturally from the sun. In So Cal in June it will be mid 80's and tops out at 88 in August
    Built 2003, 15,000 Gal w/ Spa, In Ground Plaster
    Pentair CCP420 Clean & Clear Plus Cartridge Filter
    Pentair Intelliflo VS-3050 Variable Speed Pump
    Pentair Mini Max 4000 BTU Heater - TF-100 & ColorQ Pro 7
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