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My levels are as follows: Total chlorine - 5.0 ppm Free chlorine - 5.0 ppm pH - 7.6 Total alkalinity - 125 ppm Calcium hardness - 400 ppm Stabilizer - 100 ppm Total dissolved solids - 1200 ppm My chlorine is a little high because I just shocked it a couple days ago. My alkalinity hasn't been...

Since my last post, I've tried spot out from pinch a penny which worked for the most part. That, in combination with leaving a chlorine tablet on some of the darker bigger spots, cleared most of these smudges. But they are coming back again. Could these be caused by oak trees? Scrubbing does...

I'm sorry I don't have the printout of my levels handy right now. I take my water to the local pool store to get my levels checked every week and if they tell me I'm in the normal range, I discard their printout. I was letting a chlorine tablet lay on the spots for about a couple hours. When I...

Hi all. I'm new to this site but found it to be very useful. I'm having issues with brown smudges on the wall/floor of my pool. I've tried shocking the pool, brushing with brush, brushing with chlorine tab, and also vitamin C tablet to no avail. All my levels are in perfect range and were...