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Thread: Recurring grey patches on vinyl pool floor

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    Recurring grey patches on vinyl pool floor

    Was not sure where to post this so I'm trying this forum. I have a crystal clear pool that mid summer every year I start developing recurring grey patches. These occur in shallow end only and will not remove with scrubbing. In the past when I have super shocked they disappear. I now have SWG and FC is 6 and they persist. All my chemistry is perfect.
    Ph 7.4
    Alk 60
    Cya 60
    Temp 87
    FC 6
    Any thoughts, suggestions?

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    borjis's Avatar
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    Re: Recurring grey patches on vinyl pool floor

    clear photos please.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    Re: Recurring grey patches on vinyl pool floor

    Will do. Waiting for a party to clear out then I will send ASAP
    Thanks,
    Mike

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    borjis's Avatar
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    Re: Recurring grey patches on vinyl pool floor

    What is the CH level? (in case it's a fill water / high calcium issue)

    - - - Updated - - -

    Also have you touched these areas...are they rough or smooth?
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

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    Re: Recurring grey patches on vinyl pool floor

    image.jpg
    Well can only insert one I'm sure I must be doing something wrong. Today FC 5, CC 0, CH undetectable
    Thanks,
    Mike

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    Re: Recurring grey patches on vinyl pool floor

    The areas are smooth consistent with remainder of floor. They always recurr mid summer same areas and never deep end. My pool is southern exposure so literally in the sun from 8AM to 7PM. Never have debris on floor nothing ever in there to stain it. I think it's an algae or something leaching in from the ground to stain it. But obviously not sure.
    Thanks again for your time and interest,
    Mike

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    borjis's Avatar
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    Re: Recurring grey patches on vinyl pool floor

    hhmmm...if someone told me that is a pattern I'd believe it.

    no idea what that could be, bumping in hopes someone does.
    16x32 IG Vinyl, 13,000 Gals. Hayward S-244T sand filter, SP2810X15 pump
    (1.5 HP motor) Raypak PR266AEN (266k btu) gas heater. TF-100 Test Kit.
    Dolphin E10 Cleaning Robot.

  8. Back To Top    #8

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    Re: Recurring grey patches on vinyl pool floor

    It is a pattern if you zoom in to middle of photo is the stained area does not show up well on photo.

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    Re: Recurring grey patches on vinyl pool floor

    No absolutely smooth. It's color change only.

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