I have a TFS-100 kit. No CC's today. At the beginning of the season I had CYA of 3, and since then (Memorial Day) I've added probably 12 pounds of granular (not at one time of course). I will do an overnight test in the morning. A little background: about a week and a half ago the water was deep green. I went to the pool store and got this report: FC & TC: 0, pH: 8.2, TA: 120, CH: 150, CYA: 35, Phosphates: 300, and TDS: 1750. Their recommendation was to drain it and start over. I drained about 20% and refilled and after a couple of days I got back to blue but it has remained cloudy.