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Thread: What is this?

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    Steve-in-VA's Avatar
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    What is this?

    Have a co-worker who has an above ground oval pool. Water clear but has this in his pool. Not sure what it is... Black algae?






    21,200 gallon/ 30' vinyl round above ground pool/ 200# hayward sand filter/1.5 hp hayward pump (70gl/m) /
    /self installed pool about 3 years ago - Smithfield, VA- Pool filled with well water -TF100 kit

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    Azgirl71's Avatar
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    Re: What is this?

    Does it brush up? If so I would vacuume it up. If not I am not sure. Has he done a OLCT?
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Steve-in-VA's Avatar
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    Re: What is this?

    Said brush doesn't do anything but does get clear after adding a shock bag


    21,200 gallon/ 30' vinyl round above ground pool/ 200# hayward sand filter/1.5 hp hayward pump (70gl/m) /
    /self installed pool about 3 years ago - Smithfield, VA- Pool filled with well water -TF100 kit

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    Steve-in-VA's Avatar
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    Re: What is this?

    Doesn't have test kit. it doesn't get completely clear just gets lighter


    21,200 gallon/ 30' vinyl round above ground pool/ 200# hayward sand filter/1.5 hp hayward pump (70gl/m) /
    /self installed pool about 3 years ago - Smithfield, VA- Pool filled with well water -TF100 kit

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    Azgirl71's Avatar
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    Re: What is this?

    He may be able to rub it with a chlorine puck since it gets lighter if he puts shock on it
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Steve-in-VA's Avatar
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    Re: What is this?

    Yeah that's what I told him to try...


    21,200 gallon/ 30' vinyl round above ground pool/ 200# hayward sand filter/1.5 hp hayward pump (70gl/m) /
    /self installed pool about 3 years ago - Smithfield, VA- Pool filled with well water -TF100 kit

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