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Thread: Ph and alkalinity

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    Ph and alkalinity

    My pH is 7.5.
    My chlorine is 2.
    My calcium is 200.
    My alkalinity is 40.

    How do I raise the alkalinity to 80 without raising the pH using bicarbonate?
    1500 gallons SPA. 104
    IG, Plaster, 6years old.
    Sand filter Triton ll TR140.
    Taylor K-2006 Complete Pool
    Pentair brominator feeder using bromine. Bi-carbonate. Calcium chloride.

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    Richard320's Avatar
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    Re: Ph and alkalinity

    Baking Soda has very little immediate effect on pH. High TA will push ph up over time.

    Plug your numbers into poolmath and see what the dose of Baking Soda should be. Then scroll down to Effects of Adding Chemicals and enter that amount there. It should give you a close approximation of what the baking soda will do to the pH.
    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 alkalinity

    Yes I was wondering how I can calculate the dosage needed for alkalinity and also see the effects on the pH as well. How do I do that?
    1500 gallons SPA. 104
    IG, Plaster, 6years old.
    Sand filter Triton ll TR140.
    Taylor K-2006 Complete Pool
    Pentair brominator feeder using bromine. Bi-carbonate. Calcium chloride.

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    Richard320's Avatar
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    Re: Ph and alkalinity

    Quote Originally Posted by whitemok View Post
    Yes I was wondering how I can calculate the dosage needed for alkalinity and also see the effects on the pH as well. How do I do that?
    Pool School - PoolMath explains how to use http://www.troublefreepool.com/calc.html Take the time to read the article, don't just rush off to use poolmath. You might miss some of the features otherwise.
    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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    In the Industry

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    koloa,hi
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    Re: Ph and alkalinity

    OK thank you for your time
    1500 gallons SPA. 104
    IG, Plaster, 6years old.
    Sand filter Triton ll TR140.
    Taylor K-2006 Complete Pool
    Pentair brominator feeder using bromine. Bi-carbonate. Calcium chloride.

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