New guy here, sort of the same thing but follows the flow of the current. Like the upward slope from the deep end I get small patches on the seams and corner angle of the upward slope of one side of the pool and on the other side where it makes it's way down to the bottom, just on the edge of the seam, Nothing on the walls. I was thinking it was MA as well until I dove down with a food type syringe, lol and got a sample to put in a glass. Got some pics of it on the floor and in the glass. Also did a full vacuum this morning with a scum sock on the skimmer basket and it looks like it caught a lot of the same stuff.
