I'm ready to turn my pool into a water fall and lazy river. May still do it this fall. For now, trying to recover from pool store mis-info. Had a black pool that smelled like a sewer upon coming home from a 5 day trip. Put in two cases of burnout 35, numerous gallons of 12.5% chlorine, numerous tabs of Tri-chlor, lots of PH increaser, CYA, 2 quarts of algicide. About a week later, i have a clear pool with the following levels; CL-3, PH-7.2, ALK-180, CH-500, CYA-100. Draining water now so I can get CH and CYA down. Pool Math recommends 50%, Ouch. Still have about 3200ppm salt in the pool, but will not use a salt generator again for reasons of reliability. Hope I'm own the right path now.