At the bottom activity has been decreasing since week 3, and this week there was virtually nothing except for a few nematodes and rotifers roaming. However, there were hundreds of diatoms lined up randomly all along the bottom layer between the plants and scum layer.
Plant "A" seemed to have almost all living activity surrounding it. There were countless cilia, and also some nematodes and rotifers. I am not sure why so much of the remaining organisms surrounded plant "A". Possibly because it was the only source of nutrients for the organisms.
Citation:
Patterson, D.J. . Free-Living Freshwater Protozoa. Washington D.C.: Manson Publishing, 2003.