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Thread: Brown Stain at bottom of pool / near return

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    Brown Stain at bottom of pool / near return

    Hi peoples,

    I dont really take care of this pool but some people need help in getting rid of a brown stain that looks to be getting larger as the years go by ...

    Here is a pic!

    Any ideas? Do I need to give ya all the pool test stuff?


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    Join Date
    Feb 2008
    Flower Mound, TX

    Re: Brown Stain at bottom of pool / near return

    Welcome to TFP!

    Yes, we do need to see some teest results that include FC, CC, CH, CYA, pH, and TA.

    Is the stained area rough, slimy, or otherwise different from the regular plaster? It almost looks like organic stains from debris that has been collecting in the dependent areas of the pool over time.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

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