5 days ago I added 2 cases of chlorine and a quart of polyquat to get rid of a stuuborn algae growth, which it did. The water is now blue but remains cloudy. visibility is about 2 feet. Using an HTH test kit the chlorine is over 5, Ph 7.2, and alk at 240 ppm. Using HTH test strips hardness is 200, FC=10, pH=7.2, Alk=240, cya=30-50.It's a 16' x32' x 48" A.G. I've been using trichlor in a floater but have taken it out for now. I'm thinking ph needs to be increased but unsure of what else could be done.