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would iron cover the whole bottom like that in a fine powder

Im getting some what looks like curling iron burns at the bottom i think those might be iron. the other brown stuff seems like algae. it brushes away into a cloud and turns grey when shocked.

Hello all, I bought house last year with a pool. I had never owned a pool before. my pool is 20x40 and 8 foot deep so a large pool. All season i fought with brown algae and it never went away. i spent over 10k and had pool experts come out 20 times and never got the brown algae to go away. I...