I don't know. Fish poop and algae? Maybe I should take a picture of it. I can see the net and just below the waterline there is about an eight of an inch of "stuff" on each of the fine netting threads. If I shake the net it all falls off. It doesn't seem to be random junk either because it's a hair like structure that is uniform. It could just be flow from the filter but it almost seems as if it's being held on by some kind of static electricity.
I have the water swirling counter clockwise in the pool and clockwise in all the barrels. Could it be building up some kind of a charge? I will see if I can get a picture of it so you can see what I mean. This stuff started collecting on the net by the next morning whatever it is.
