I have brownish stains on the bottom and sides of my pool. I have tried shocking and scubbing but with no results. I did put some vitamin c in a stocking and put it on the stain in the shallow end with the pump off. After about 5 minutes it started to fizzle with a dark brown cloud around it. I removed the vitamin c and there was a dark colored stain where the vitamin c was. After about 35 miniutes the dark colored stain vanished, but it appears the original tan stain is still there.
Did I leave it on the stain long enough, I panicked when I saw the dark colored stain appear on my plaster. Please assist.
I have a swg, with well water. I did not know much about pool chemistry at first, so my ph and chlorine were high for the first couple of years. I now test my water at least twice a week, and the pool store says there is no metals in the water. I now use a metal trap to top off the water in the pool, and use Jack's Magic weekly.
Please assist. Thanks.