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26400gal vinyl CYA 30 FC 3.5 CC 0 TA 190 pH 7.4 I thought I had mustard algae and slammed. But my FC wouldn't hold and CC continued to read at 0. My pH goes up every day, I've had it at 8 and higher for the last 3 days, add MA to drop it and it goes back up. And, I did have consistent CYA of 50...

Long story short, I've paid a pool guy for 2 years to take care of the weekly maintenance on my pool (27540 gallons, IG, vinyl, Sand Filter). I decided to do it myself after thousands of dollars spend. He opened it this year and it was a swamp. Starting levels: FC = 2.6 pH = 8.0 TA = 250 CH...