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Thread: Should I lower pH?

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    tlwilson's Avatar
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    Should I lower pH?

    I add MA at least twice a week because my pH keeps going up and hit 8.0 once. It is 7.8 today. TA is 110, so I don't want to give it a big hit of MA to lower pH. Two days ago I put in 32 oz MA according to the Pool Calculator. I hate it that I am lowering the pH all the time and my concern is if I let it sit at 7.8, it will sure go to 8.0 or above in a short time. Is this normal?

    FC 2.6 (will add chlorine tonight after the sun goes behind the house)
    CC 0.0
    pH 7.8
    TA 110
    CYA 45
    Water is clear and sparkly and 84 degrees.
    24,000 Gal In Ground pool
    Vinyl Liner; Sand Filter
    Pentair Intelliflo pump
    Pentair IntelliChlor IC40 SWG
    Raypak Gas Heater

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    duraleigh's Avatar
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    Re: Should I lower pH?

    I suggest you lower the TA using the method in Pool School. Once your TA gets around 80, aerate back up to get your pH around 7.2 - 7.4 and then see if it will be more stable.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    tlwilson's Avatar
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    Re: Should I lower pH?

    There is a lot of wind here the last couple of weeks with frequent, high gusts that ripple the water. Is that contributing to the pH increase?
    24,000 Gal In Ground pool
    Vinyl Liner; Sand Filter
    Pentair Intelliflo pump
    Pentair IntelliChlor IC40 SWG
    Raypak Gas Heater

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    Richard320's Avatar
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    Re: Should I lower pH?

    Quote Originally Posted by tlwilson
    There is a lot of wind here the last couple of weeks with frequent, high gusts that ripple the water. Is that contributing to the pH increase?
    Almost certainly.
    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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    tlwilson's Avatar
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    Re: Should I lower pH?

    You folks are the greatest! Such prompt, knowledgeable responses! I appreciate your help so much.
    24,000 Gal In Ground pool
    Vinyl Liner; Sand Filter
    Pentair Intelliflo pump
    Pentair IntelliChlor IC40 SWG
    Raypak Gas Heater

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