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  1. K

    Dots on pool steps, plus metal/rust stain questions

    Unfortunately the rust stains are too deep to be able to rub a Vitamin C tab on. Is there a good method for doing something like that in the deep end? Perhaps I just need to be more patient/persistent with the ascorbic acid/sock method? Yes, there's a chance something could have blown in on the...
  2. K

    Dots on pool steps, plus metal/rust stain questions

    Earlier this summer we had the concrete deck around our fiberglass pool redone. The workers dropped some metal parts in the pool, causing some rust stains on the bottom (picture of one stain attached). To try to fix it, I dumped ascorbic acid in the pool, followed by Metal Free (or something...