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Thread: The stains have not lightened at all

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    The stains have not lightened at all

    I added 2# ascorbic acid and have been running filter for about 12 hours straight. The stains have not lightened at all. I'm sure it's iron because I used the vitamin c tablets to test and as they sat on the bottom they made wonderful bright clear spots! There is a blue liner in there after all. I have well water, very low ph, very soft. Perfect water for drinking and showering!
    I've got a bottle of Metal Magic ready to go in, but don't know what to do if the stain isn't budging. Add more AA??

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: The stains have not lightened at all

    Welcome to TFP!

    Yes, add more AA. If the stains don't lighten within half an hour, add more AA.
    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: The stains have not lightened at all

    How much is too much? approx 16xxx gal of water in pool.

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    Re: The stains have not lightened at all

    Did you lower your chlorine level to near zero before treatment?
    21,100 IG Vinyl
    Hayward Pump
    Sand Filter
    TFPC
    Taylor K-2006 Kit

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