Not sure if I am posting this in the right place. First time here. We have been doing everything to get rid of the green pool. I have a 20,000 gallon saltwater pool. The system is a autopilot dig220. The board keeps blinking purifier off check flow. We changed out our trisensor. But it still keeps reading a low salt level. We keep losing chlorine. We honestly don't know what to do. These are our readings.
I have also cleaned out all the skimmers. We just don't know what to do anymore.