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Thread: Mysterious spots

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    Mysterious spots

    Anyone know what these spots might be? I have tried scrubbing them with a brush and they will not go. I spoke with my local pool store and they thought it might be from metals (but water tested 0 metals in water) so i purchased some metal magic and scrubbed them again without any change. Thoughts?
    pool 1.jpg
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    25,000 Gallon Vinyl in-ground pool. Pentair 1.5 HP superflo, Hayward S244T sand filter, Polaris PB4-60 booster pump, Intellichlor IC40 SWG

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    Mod Squad jblizzle's Avatar
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    Re: Mysterious spots

    Are they slimy? Can you pick it off with your finger nail and scrap on a piece of paper?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Mysterious spots

    Quote Originally Posted by jblizzle View Post
    Are they slimy? Can you pick it off with your finger nail and scrap on a piece of paper?
    They aren't slimy. I have rubbed them with a fingertip and nothing changes. I haven't really tried to pick them off. I don't think there is anything to get a hold of to pull them off.
    25,000 Gallon Vinyl in-ground pool. Pentair 1.5 HP superflo, Hayward S244T sand filter, Polaris PB4-60 booster pump, Intellichlor IC40 SWG

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    Mod Squad jblizzle's Avatar
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    Re: Mysterious spots

    from the pix I was expecting algae ...
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Re: Mysterious spots

    Quote Originally Posted by jblizzle View Post
    from the pix I was expecting algae ...
    I did too and i had my water check and they didn't find any algae in it. I'm not sure how sensitive their tests are though. Plus, I've never had any trouble with algae before.
    25,000 Gallon Vinyl in-ground pool. Pentair 1.5 HP superflo, Hayward S244T sand filter, Polaris PB4-60 booster pump, Intellichlor IC40 SWG

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    Mod Squad jblizzle's Avatar
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    Re: Mysterious spots

    You can not have your water checked for algae if the algae is clinging to the pool
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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