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I am getting a black stain on the 3 discharge jets, 2 wide mouth skimmers, and now the 2 screened returns in the deep end. My readings for the pool are: Fc - 9 pH - 7.8 TA - 70 CH - ~100 CYA - 65 Salt - 3200 I noticed this last season and it was very mild compared to this season. I don't know...

This is the first year I opened the pool my self. Did all the recommended steps I read under the sticky (Thank You). I ran the filter non stop for the first two days, vacuumed the bottom and took my readings via a TF 100 test kit. Fc - 9.5 - I turned the shock on the SG during the first 2 days...

I am going on my second season with my pool and have learned a lot from reading the Pool School area. My question or concern is I am considering trying Borax this year and was just concerned how to approach getting started. My levels are: FC - 8 pH - 7.8 TA - 70 CH - 200 CYA - 0 Salt level -...

1st time pool owner. Just had it built/finished last year in October and now opened it May 26. Pool builder added: 1 Qt Poly 60 Algaecide, 1Qt Sparkle Super Clarifier, and 320 lbs of salt I added: 15 lbs of Alkalinity up, 4 lbs of CYA, 1 1/2 lbs of pH Increaser, 15 lbs of Hardner Plus, and 160...