CC usually 0 but every so often it gets to .5, CYA=50, Ph=7.4-7.6; TA=115; Calcium=80. Thought my CYA was high enough such that I should stay off the trichlor tabs. Last night I added 3.5 gal of bleach to raise FC from 2.5 to 14.0 when tested this morning before sunrise. Tonight FC was 6.5.