I'm having same problem with my pool and It's making me nuts and so are my 4 kids that want to jump in it lol when I first set it up and did the first treatment of what it needed it was good for about a week and then 0 Fc and its been a fight everyday. Tested pool a few min. ago and it reads TH 100 FC/Bromine 1/2 PH 7.5 TA 120 and CYA 40. It is also cloudy. I add stuff for algae once a week and the sides aren't slimy or anything. Iv also added 40 pounds of shock over the last 2 weeks. I also clean and backwash every few days. I would really appreciate any help because I'm about to give up on it :|