There is a film of a yellowish silt part way up the walls and on the floor of my pool. I dont think the vacuum is totally catching everything because it seems too fine. I can brush it away easily. Could this be algae?
some important information: The door to one of my skimmers came off and I did not put it back on for a couple of days... my FC levels were very low last week (now back up), and I think I was not running my filter long enough. I am wondering if this could be sand from my filter? I backwashed it this morning and it was dirtier than usual.
any help is appreciated!