I have read alot of the posts on how long to run the pump. I haven't seen any posts with my paticular denominators. 33 ft. round pool, 52" high, 26 inch sand filter with 2 speed(1/2 hp or 2hp) pump. I'm not good at math so if any one can help me figure out a good estimate of hours I should be running my pump I'd appreciate it. Thanks, Sharon