Tonight's test at 11:00 PM I have 5 FC. I was at 9 FC when I tested around 8 AM, and added 2 jugs of bleach, which should have brought me to around 14 FC. I added 3 jugs of bleach tonight which should bring me up to around 12.5 FC. I haven't had any sudden drop of CYA. I am out of the R-0013 now so I can't test my CYA until my new kit arrives. It was around 35, and I added the last of the CYA in my jug, around 2 lbs., on Sunday. I will be up bright and early and test and bleach again before work. I am amassing a lot of empty bleach jugs!