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Thread: Alkalinity range.

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    Alkalinity range.

    CYA 50
    FC 8
    Ph 7,4
    TA 120

    I've read 125-150 (pool store)
    I've read 60-120 (on here)
    I've read 80-120 (test kit)
    I've ready 80-200 (website)


    What would you guys say and what range would you use when you actually start doing something about to lower/raise it.
    And what direction does Alkalinity usually drift over time, lower or higher?
    16x32X8 Vinyl liner 21,000 gal.
    Hayward Pro Series S220T 250lb. sand filter hard plumbed
    Taylor K-2006 Test

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    Texas Splash's Avatar
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    Re: Alkalinity range.

    For a pool of your type, TA could be anywhere from 50 to above as noted on the TFP Recommended Levels chart (link below). The key is finding a level (let's say 60-70 for example) that once achieved, helps keep your pH from rising too fast. TA will usually rise when you have to add fresh water to the pool from summer evaporation if your source water is slightly elevated. Some places do a have a lower TA value, but most water supplies seem to be slightly elevated. Every pool is different, so as long as your pH doesn't go crazy high quickly, don't worry too much about it. FYI - My pool's happy TA zone is 50-60.
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  3. Back To Top    #3

    Re: Alkalinity range.

    So should I worry about 120 being higher than the 60-70 range? Or is it basically if it falls below 50 I need to do something about it?
    16x32X8 Vinyl liner 21,000 gal.
    Hayward Pro Series S220T 250lb. sand filter hard plumbed
    Taylor K-2006 Test

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    Texas Splash's Avatar
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    Re: Alkalinity range.

    If TA falls below 50, it's probably time to increase it a little. But as far as it being 120, no need to worry unless it is effecting your pH. By that I mean if your pH rises too quickly each week, then you may want to lower TA a little at a time, otherwise just leave it alone.
    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.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  5. Back To Top    #5

    Re: Alkalinity range.

    At what number does TA make your pool cloudy or dull?
    16x32X8 Vinyl liner 21,000 gal.
    Hayward Pro Series S220T 250lb. sand filter hard plumbed
    Taylor K-2006 Test

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    TFP Guide

    AimeeH's Avatar
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    Re: Alkalinity range.

    Quote Originally Posted by Zegster View Post
    At what number does TA make your pool cloudy or dull?
    TA wouldn't affect water clarity.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
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