Thanks for all your advice thus far. As predicted my CYA dropped to 80. I've added liquid pool bleach at 10% concentrate to bring the FC up to 7.5. ph still at 7.2. My CC was 0. (after testing FC for above 5.0 via the TF-100 instructions, the solution went back to clear after the 15 drops of 003). I brushed the pool this morning to get rid of any lingering algae on the sides. The pool is mostly clear and nice looking. will an FC of 7.5 be an eye irritant? Any other suggestions?