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I just got started on SLAMming my pool today. Was at 3ppm FC this afternoon. Added 4 gallons of 10% liquid chlorine at 4:00 p.m. Did FAS-DPD test at 4:30 and got a result of 25ppm FC. ETA: my other test results from today-- CC 1 pH 7.5 TA 125 CH 925 CYA 80

My husband and I bought a house with a pool built in the 70s with what appears to be original plaster and equipment. We moved here in the middle of October. The local pool supply store guy told me I just needed to keep the chlorine at the right level and we'd be fine ... um, not so much. We...