I have yellow stains on the bottom of the pool. I tried brushing it, but that doesn't work. I also tried a 3M sponge that didn't help either. What is this and what can I do? The pool water is clear. I did have some filter problems recently, the hose from filter to pump had a hole in it and I had a bad o-ring on the pump. I was getting too much air and it was not filtering properly.
By Donna from KY
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We had the same problem recently and this is what our Pool Shop told us to do and it worked a dream, we use this method anytime the marks occur. Take the Handle from the scoop, get a white sock and fill with Chlorine and attach to bottom scoop handle and rub into the spot (don't need to get into pool to do this). May have to repeat a couple of times. Trust this helps.
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