Thanks Doc.
Been developing a new problem over the past week. Actually noticed it a couple of weeks ago after a bad dust storm that coated the bottom of the pool with dirt. The vacuum seemed to not be getting everything and I thought it was just the handy son not brushing very well, but then I brushed good and the dirty looking sediment doesn't come off. I haven't been adding ANY chemicals to the pool on anticipation of doing the drain and refill, but now I'm not sure when I will be able to do it. Might be several weeks. Anyway, over the past few days what was just dirty looking bottom corners has grown to cover most of the floor and lower walls... Any ideas?
Also, we have cartridge filters - 4 or 5 in the big compression tank - each one is about 3' or 3.5' long and about 6" around. We run the pump about 8 hours a day. Should we run the pump more, and how often should we clean the filters? Thanks. Sam