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Yes, I've always brushed regularly. Did about 5 times yesterday. Once today. It's not moving or even flaking a bit.

I'm on day 2 of shocking and while I failed the overnight test last night (FC 11, night; FC .5, morning), my intervals of adding boatloads of bleach are going down, so I'm hopeful. I know this is going to take a bit more time, but I was wondering if anyone can identify the black spots on the...

Yes. Adding 300ish oz of bleach did little after an hour (was 0) and brought to .5. Added 245 oz after that (per pool calculator) and no increase. Then let sit overnight.

It was .5. After attempting to get to 6 the chlorine wasn't holding. Do I need to shock to try and get me up to the right level then do the overnight loss test?

Here's my numbers at night: FC - .5 CC - 1.5 PH - 7.5 TA - 120 CH - 170 CYA - 30 And in the morning: FC - 0 CC - 1 PH - 7.5 TA - 120 CH - 170 CYA - 20 I'm assuming shock time? Any other tips? Again, thanks so much for your help!! Sherry

We bought our house last year and my project has been our pool. It seems I'm failing. I bought the test kit (TF-100) as suggested on this site and here are my readings: FC - 0 (didn't even turn pink when I put the powder in) CC - .5 PH - 7.5 TA - 120 CH - 170 CYA - 30 When we opened the pool...