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Thread: black ring vinyl liner

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    HamburgerChef's Avatar
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    Apr 2013
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    Indianapolis Indiana
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    black ring vinyl liner

    Opened the pool and found a black ring around everything at water level. The stains were mild last year and easily removed with Magic Eraser but after sitting all winter the stains are pretty bad. What could be causing this and can it be prevented?
    13,500gal AGP Matrix 24'
    Pentair Sanddollar SD-80 75GPM filter, Pentair Dynamo 1HP 2 speed pump
    Polaris 65 pool cleaner
    (20'x30" solar heater to be installed)

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    Re: black ring vinyl liner

    Do you have a Pool Frog or a Nature 2?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    HamburgerChef's Avatar
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    Apr 2013
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    Indianapolis Indiana
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    Re: black ring vinyl liner

    Quote Originally Posted by frustratedpoolmom View Post
    Do you have a Pool Frog or a Nature 2?
    No. I have a auto cleaner but it only does the bottom.
    No feeders just use bleach, muratic acid and cya.
    Last edited by HamburgerChef; 05-21-2014 at 04:46 AM. Reason: additional info

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    11,965

    Re: black ring vinyl liner

    I'm guessing it's some kind of staining from environmental factors like pollution. Here around Chicago we get it too, but the Eraser usually takes care of it... I asked about the ionizer systems because the copper can leave a ring too.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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