Yes, the SWG has been off the last few days of the shock process. My SWG I believe is toast anyway. It is an old Polaris Autoclear Plus made back in 05 with the original cell. Sometimes the salt readings show fine on the display and an hour later it will change by showing 1000-1500ppm lower and tell me to add salt. I have cleaned the cell, but I feel it is about to give up the ghost.