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Thread: Green to clear, but algae stains remain

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    Green to clear, but algae stains remain

    FC - 24
    CC - .5
    PH - 7.2
    ALK - 90
    CH - 330
    CYA - 38
    Temp - 87

    Following your advice, I'm on day 4 in turning pea soup to a clear pool. I've superchlorinated with 6% bleach and kept the FC at 25ppm and scrubbed the pool with a wire brush everyday. The pool is now clear, but I can't get rid of the algae stains (see pic).
    Any help would be much appreciated!

    24,000 gal
    diamond brite (black)
    sand filter
    Attached Images Attached Images
    24K (16x36) IG Gunite, Diamond Brite (black), 1.5 HP Hayward, sand filter

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Green to clear, but algae stains remain

    I can't really tell from the pic, but if the stains are organic (and it sounds like they are), I would simply hold elevated chlorine levels (about 5-8ppm with a CYA of 40) for the next few weeks and I believe they will slowly go away before you are ready to close for the season.....depending on where you live.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Green to clear, but algae stains remain

    Welcome to the forum

    'Yep' to what Dave said. If the stains are organic, they will fade away.
    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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