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    I'd like to understand rust stains better.

    I know the obvious things that will rust a pool. Hardware left sitting in one. Anything steel or iron. But what about other kinds of popular outdoor chemicals or products, or even indoor ones that might get left outside? Are there any dissolved forms of metals that could somehow cause a...
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    Trying to deal with troublesome stains. Seems like rust.

    A couple weeks ago I noticed a bunch of small red spots in my pool. I've seen similar stains before and I got the sick feeling it was rust. This is a white plaster pool and I've heard rust in plaster is the worst to try to get rid of. I am trying to save the pumice stone as a last resort...
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    Air in Returns and Filter

    This topic was split from This thread for better response. Bama I'm curious what was found here? I am trying to figure out a problem that is very similar with a Dynamo Pool Pump. The basket is full of water when running, yet air is returning to the pool. The air is also constant from the air...