We opened our pool for the season last weekend, water was so clear!. Ran pump for a few days with message to clean the cell on SWG. Cleaned the cell which started the full production of chlorine and then the next day the water appeared to have a yellowish/greenish tint from a distance, pretty much overnight. When looking closer it appears that the tint is only because of a film on the walls that appears to be pollen and/or dirt. It brushes away in a cloud. The water itself is still clear. I don't notice much buildup on the floor of the pool, primarily on the walls only. We have high pollen alerts in our area right now but the dusting on things outside is minimal compared to a few weeks ago before the cover came off the pool. Does this sound like mustard algae or just pollen buildup? I'm confused since it only seemed to happen AFTER the SWG was operating properly. Any suggestions are greatly appreciated!