Observation 4

There were about twice as many single celled algae and diatoms.  There was also twice as many dead coleps at the bottom of the tank and less living ones swimming around.  I found a new organism as well.  It was a philodina which is a rotifer(Pennak 1989).  I only saw one of these organisms in my tank but there are probably more.

Reference:

Pennak RW. 1989  Freshwater Invertebrates of the U.S.  3rd ed.  New York (NY):  John Wiley & Sons Inc.  179 p.