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Thread: Low alk, low ph, cloudy water

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    Low alk, low ph, cloudy water

    I have a fiberglass 12,500 gal pool. Used nat chem stain away and metal free to remove metal stain. Now water is cloudy. Not sure what to do. Here are my readings:
    Tbr 10
    Fc 5
    Alk 0
    Ph 6.8
    Hard 100

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    duraleigh's Avatar
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    Re: Low alk, low ph, cloudy water

    Welcome to the forum.

    I don't think your TA is zero and you don't post CYA. Retest your TA (alk) and report if you can test for CYA.

    What does your water look like?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    JasonLion's Avatar
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    Re: Low alk, low ph, cloudy water

    Welcome to TFP!

    It is normal for the water to cloud up for a day or three right after a stain treatment (we call it an AA treatment). The water will clear up in not too long.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Low alk, low ph, cloudy water

    My test doesn't give CYA but I refilled with fresh water a couple of weeks ago so I think it should be low. It is well water which is why a got the stain to begin with. I used Natural Chemistry Stain Free with citric acid. I noticed they offer a Stain Free Extra Strength. Is that 100% ascorbic acid and should I use that instead as the citric acid did not remove all of the stain?

    Thanks for your help.

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    JasonLion's Avatar
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    Re: Low alk, low ph, cloudy water

    Citric acid (Stain Free) and ascorbic acid (Stain Free Extra Strength) do much the same thing, and it is more a question of total amount used than which specific product you are using. For price comparisons, you need twice as much citric acid as ascorbic acid to have the same effect.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Low alk, low ph, cloudy water

    Makes sense. I will probably use AA to remove the rest of the stain. Can I go ahead I use it now with the readings above? Do you recommend using the Natural Chemistry Extra Strength AA or a different bran?

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    Casey's Avatar
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    Re: Low alk, low ph, cloudy water

    I believe your FC needs to be very low to do an AA treatment.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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