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Thread: "rust" spots on bottom of pool

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    "rust" spots on bottom of pool

    We have a fibreglass pool and in the past couple of weeks I have noticed what look like rust spots on the bottom of the pool. They do not come up with brushing or rubbing.

    Any ideas?


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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: "rust" spots on bottom of pool

    Welcome to TFP.

    Put a Vitamin C tablet on them. I use a PVC coupling to keep the tablet from moving with current.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
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