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Thread: Black Stain On Test Kit Tubes

  1. Back To Top    #1
    todd.scallions's Avatar
    Join Date
    Apr 2010
    Bartlett, TN

    Black Stain On Test Kit Tubes

    I read somewhere on here about how to remove the black ring stain on your tfttestkit tubes but I can't seem to find it.
    1.) 27,000 gallons
    2.) Sand Filter
    3.) In-ground
    4.) Vinyl Liner
    5.) 1HP/63GPM

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Black Stain On Test Kit Tubes

    diluted muriatic acid
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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