yea i realize the shock shoots the chlorine levels up. just never have kept chlorine levels high for days like this...wanted to make sure i understood exactly what you are saying so i don't screw up and make it any worse. i do appreciate very much you bearing with me and helping me. honestly, thanks very much. the pool is still cloudy, not as bad, can see the bottom. i don't trust my judgement on the water testing i do, but today my readings are chlorine 15, ph 7.5, ta 180. can't test for cya. keep the levels high until it completely clears...is that right? also, i could stand to add water as the level is down due to backwashing, etc....but should i hold off on adding water until this problem clears.if it ever does? thanks