Getting ready for new pool fill. It is a 24x48 3ft -9ftdeep. Approx 54,000 gal. Shotcrete pool. Aquamatic cover. Plastering pool in approx 2 weeks. Equip. Intelliflo var speed 3hp. Tg100 sand filter raypak 406. Nature 2. 320 rainbow chlorinater. Tested water from tap. Ph 8. Fc. 1.5...