Hi I'm trying to figure out what these things are on the bottom of my aquarium. Are they just poop or are they eggs to some parasite? I just switched from a black and white sand substrate to a light tan one so it's possible I just didn't see them before. I have rasboras, shrimp, cory cats, mystery snails, rabbit snails, nerite snails, and a couple pest snails. Could this be one of their poop. It seems to form in piles and is fairly light. They sit on the bottom but get blown around by the filter.
Thanks, Marika