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Thread: Need advice on Ph/Alkalinity

  1. Back To Top    #1
    Rubygrrl's Avatar
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    Need advice on Ph/Alkalinity

    Hello everyone!

    My husband and I just finished removing metal stains from our pool using ascorbic acid and following the advice from this forum. We first lowered the chlorine to 0 (there might have been 2 ppm at most in the pool), added polyquat 60 to prevent algae, set the filter to circulate, added the ascorbic acid, waited 30 min, and all of the stains were gone! It was amazing We then added metal sequestrant and set the pool back to filter. We have waited 24 hours and are in the process of rebalancing the pool water.

    Alk = 60
    PH = between 6.9-7.1

    The pH is right where we need it to prevent the stains from coming back. We know to really watch the PH and to keep it at 7.0-7.2 to prevent the stains from coming back.

    The problem is, do we need to raise the alkalinity? It is a bit low.

    Can we start adding chlorine (we know to do this slowly and to watch for stains)!?

    Any other advice?

    Thank you all so much!
    In-Ground Vinyl Pool
    21,000 gallons
    Sand Filter
    1 1/2 hp pump

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    Mod Squad jblizzle's Avatar
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    Re: Need advice on Ph/Alkalinity

    What is your TA? The higher the TA, the more quickly the pH will rise. So, I would think a little low might be preferred to a higher level.
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  3. Back To Top    #3
    Rubygrrl's Avatar
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    Re: Need advice on Ph/Alkalinity

    TA is 60
    In-Ground Vinyl Pool
    21,000 gallons
    Sand Filter
    1 1/2 hp pump

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    Mod Squad woodyp's Avatar
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    Re: Need advice on Ph/Alkalinity

    I wouldn't raise the TA until you see how your PH reacts to that level. Might be just right. I keep might a bit lower than the recommendations here. Just keep it checked.
    And yes, add chlorine.
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  5. Back To Top    #5
    Rubygrrl's Avatar
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    Re: Need advice on Ph/Alkalinity

    Ok thanks everyone! That's what we were thinking, but we wanted to get y'all's advice
    In-Ground Vinyl Pool
    21,000 gallons
    Sand Filter
    1 1/2 hp pump

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