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Thread: stain not removed by trichlor

  1. Back To Top    #1
    rnjw's Avatar
    Join Date
    May 2014
    Pittsburg, CA

    stain not removed by trichlor

    I tried rubbing a trichlor puck on several stains on the bottom of our inground fiberglass, painted pool. Although one stain appeared to show a clear line through the rubbed area, another appeared yellow after I left the puck on it for about an hour.
    Have not gotten any citric acid yet.

    Hard to get a photo that shows clearly as the stains are mostly low contrast against the bright blue. 20140712_115645.jpg

    Welcome your suggestions.
    semi rectangular ~ 12,000 gal pool, fiberglass built in 1983, painted 2014.
    Pentair WhisperFlo WFDS6 1.5 HP, Crystal Water cartridge filter, using TF-100 test kit, bleach per TFP

  2. Back To Top    #2
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: stain not removed by trichlor

    You can try cheap Vitamin C tablets for the ascorbic acid test.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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