I have a bunch of very tiny white bugs "on" the water in my humidity tray for one of my orchids. They are about 1 mm long. When I first saw them I thought they were dust. I don't believe they are fungus gnat larva as they are on the water and they are not worm like. They have heads, bodies, leggs,... My eyes hurt from trying to focus on that small of a creature. Any ideas??