So I'm slowly building a rockscape in a 29 gallon I set up last week. Tonite i added a few more pieces that apparently had some life in it. One rock has a few feather dusters on it, but then I also noticed alot of little white things floating around. They reminded me of shrimps but i know they arent. they are really tiny, I had to put on my glasses to see them. the power head keeps them flowing around the tank, i'd see one land on a rock or the sand, and then i'd see it move around.
What could they be?