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Long time lurker, first time poster. Hi all, my name is Chris and I have a pool that has been kicking my butt all season! 22,000 gallons Vinyl Liner Sand Filter PH - 7.2 FC - 10 CC - 0.6 Alk - 110 CYA - 100+ (see picture) I have been studying up on the site, using the pool calculator, and...