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Hi, all. I let FC get away from me and found it low or 0 once or twice and then developed moderately green pool (4600 gal, above ground). Results at that time (TF-100 kit): pH 7.2 FC 2.5 CC 0.5 Alk 240 Hardness 525 (no control, it comes from the well that way) CYA 30 My CYA was 30, so I...