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Thread: Pink Spot

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    TripleB4me's Avatar
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    Jun 2007
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    Pink Spot

    I noticed a very faint pink spot, about an inch and a half in diameter, on my top vinyl step which is only a few inches deep. A magic eraser did not clean it off.

    Anyone know what it could be?
    20x40 IG Vinyl, 1.5 HP Whisperflo, Sta-Rite System 3 (300) Sq. ft Cart
    Intellichlor IC40 SWCG, 125,000 BTU Pentair heatpump, Polaris 280
    7' IG FG Spa, 2 HP Whisperflo, Pentair Dynamic III Cart (100) Sq. ft

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    mbar's Avatar
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    I could be pink algae - you should post a full set of numbers, and what you are using to sanitize the water.
    16x33 fiberglass pool sand filter

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    TripleB4me's Avatar
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    I never knew there was such a thing as pink algae. I believe it maybe a small defect in the vinyl liner. It's so small and faint you really have to look for it.

    FYI, my numbers are: vinyl IG w/SWG, temp = 86 F

    FC = 5.0
    CC = 0
    pH = 7.4 to 7.6
    CYA = 40
    TA = 100
    CH = 225

    I also add some algaecide, poly 60, every couple of weeks.
    20x40 IG Vinyl, 1.5 HP Whisperflo, Sta-Rite System 3 (300) Sq. ft Cart
    Intellichlor IC40 SWCG, 125,000 BTU Pentair heatpump, Polaris 280
    7' IG FG Spa, 2 HP Whisperflo, Pentair Dynamic III Cart (100) Sq. ft

  4. Back To Top    #4
    mbar's Avatar
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    Apr 2007
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    Ashland PA
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    Your numbers are perfect , I don't think it is algae - especially if it didn't spread. Enjoy the pool 8)
    16x33 fiberglass pool sand filter

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