I have a CircuPool Universal 40 SWG. Since installing it, I have run my pumps for 4 hours per day with the SWG set at 40 and I had no problem holding an FC fo around 7. This season, I had lost a bunch of CYA and had to SLAM the pool. Once the pool cleared up, I let the FC drift back down with the pumps running 4 hours per day and the SWG set to 40. I ended up with a CYA around 60. I noticed the pool getting cloudy and checked the FC and it was down to 1. I upped the pump run time to 8 hours per day and an output of 60, but didn't see an appreciable increase in FC. I added a gallon of liquid bleach and a couple of days later I'm reading an FC of 2.5. The cell voltage readings and current are nominal, as far as I can tell. The cleaning light has gone off twice since I installed the SWG and both times the cell has been pretty clean (just some loose debris). My cell was 2 years old in June. Do I need a new cell?