Hey Suziqzer, Using same 182oz bottles of Chlorox from BJs as I've been using since starting BBB on 7/23. This mornings readings, FC=15, CC=1.5 (yeah, at least it's below 2-3!!), pH 7.6, CYA=20. How low do you think I should let the CYA get before adding? I guess I don't want it too much higher...