Thank you so very much for the help. Water is perfectly clear, impending algae bloom has been stopped in it's tracks. I may have gone overboard on the liquid chlorine to raise to shock level. My FC is 14.5 and CC is still at 0 pump still running 24/7. How often would you suggest that I check my chlorine levels? I plan on leaving the pool uncovered until the temp gets below 80F . Also what would you suggest that a perfect CYA level be to keep chlorine stabile and lasting the longest amount of time? Why on the Taylor kit is the recommended FC 2.0 to a 4.0 if CYA plays such a roll in levels? Did I miss something?