Split off of this topic and this one. JasonLion
I run the pump 12 hours a day. It turns the water over about 3 times. SWG is on at 15% and it keeps about 5 ppm in the pool. If its uncovered, a hot day, and people are in it, i crank it to 40-50% and hold it there until the pump goes off at night. Next morning, i run it back to 15% to keep 4-5 ppm. My CYA level is 30-40.