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Hello! I am fighting algae, have read all you have here. my numbers: ph 7.4 alk 117 cya 20 (i know its low, i'm working on it) fc over 10 ppm i have been superchlorinating since thur, 15,000 gal pool, so using 2 gal liq chlorine at night. water was getting blue and cloudy, but everytime i...