I have been checking my PH and FC/CC daily almost every day since I finished my slam about 4 wks ago. FC has been holding at 4 (with about 1/3 to 1/2 half gallon of 10% bleach daily), CC has been 0, PH holding between 7.5 and 7.8 and CYA at 40. Last weekend I noticed the floor had become quite slippery, but all my numbers were the same as above and the water looked perfectly clear. Long story short, I poked around on the forum and the general consensus was that it was algae. So Friday evening I dumped in 1 gallon of 10% chlorine which brought it up to 11. When I went out Saturday morning there was a slight chlorine smell and the water was noticeably "sparklier." I jumped in to start brushing and noticed the floor already felt better. In addition, there was a decent amount of dead algae on the floor. I went around and brushed, then jumped out and checked FC/CC. CC was STILL 0, but FC had dropped to 4 in about 18 hours. I am a bit confused because my CC is always 0, but it is pretty obvious that there is something going on. Do I need to start a full slam, or just bump my levels for a few days? Thanks!