Little background: Over the past few months, I've noticed my chlorine levels not as high as they should be. I've had to manually add chlorine at times. My SWG salt level got to about 3100 then started dropping about 2-3 weeks ago and now won't give me a reading at all other than "Chlorinator off - Test salt level." I bought some test strips and it's actually just over 4,200 which really surprised me. I took the cell off and noticed some buildup. The manual says to soak in a 2:1 ratio of water-salt, but I was closer to 4:1. I soaked two separate time for about 15 minutes each time and then rinsed in between. It seems pretty clear so I put it back on and no change after about 90 minutes of operation. Still says "Check System" and "Chlorinator off - test salt level." The pool will be 3 years old in August. Not sure where to go from here--hire someone to inspect the system, replace the cell? I even thought about just going back to adding chlorine like I used to in my old pools before I had a SWG. Any help is greatly appreciated.