I've just converted to BBB on my 18,600 gallon AG pool. I've fought this beast for two years, and I think I've finally got it whipped. I killed a heavy algae bloom last week, and I've lowered my CYA to 45 by replacing 1/2 of the water.
I started with my TF100 kit on Friday, and I've ran tests two nights in a row. Currently the pool is clear and looks good.
Friday night, I was at 8 FC, .5 CC, at 45 CYA. Tonight I came up with 4.5 FC, .5 CC. It was fairly hot today (temp around 98, water temp @ 85). I hit it with 19oz of 6% bleach after testing tonight, to get to 5, per the recommendations of the Pool Calculator.
So at this point I have two questions:
1. Should I shock based upon the .5 CC reading? Would my FC usage slow down if I got rid of this .5 CC?
2. What would be considered a normal amount for FC to drop daily assuming no issues with water quality?