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Thread: Round "RUST spots" popping up everywhere. Can't remove with brush or scraper.

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    Round "RUST spots" popping up everywhere. Can't remove with brush or scraper.

    Hi there,
    I've finally gotten a handle on my pool chemistry but now these little reddish brown circles have started popping up all over the pool. They are about 1/8in diameter, and I can't vaccum, brush, scrube, or scrape them off.
    They seem to be multiplying. I have a fiberglass pool, so I doubt they are rust.

    Any ideas?

    Here is a pictures
    https://drive.google.com/file/d/0Bzl...it?usp=sharing
    https://drive.google.com/file/d/0Bzl...it?usp=sharing
    Edgewater, FL
    6000 Gallon In-Ground Fiberglass Bean shaped pool
    Hayward Cartridge Filter

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    Butterfly's Avatar
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    May 2007
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    South Carolina
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    10,045

    Re: Round "RUST spots" popping up everywhere. Can't remove with brush or scraper.

    Test to see if they are organic or metal stains.

    Post a full set of test results for us
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    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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    Re: Round "RUST spots" popping up everywhere. Can't remove with brush or scraper.

    How would I test to see if they are organic or metal if I can't scrape anything off?


    Quote Originally Posted by Butterfly View Post
    Test to see if they are organic or metal stains.

    Post a full set of test results for us
    Edgewater, FL
    6000 Gallon In-Ground Fiberglass Bean shaped pool
    Hayward Cartridge Filter

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    Join Date
    Jul 2013
    Location
    Gilbert, Az
    Posts
    116

    Re: Round "RUST spots" popping up everywhere. Can't remove with brush or scraper.

    For organic rub a cl puck, for metal rub with vitamin c tablets from the vitamin section
    12k - free form - plaster- Nautilus fns48 DE filter- centurion 1hp (so quiet)- In floor cleaning system with Jandy Caretaker - TF-50 and 5 in 1 test kit, Phoenix, Az

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