The final observation of my MicroAquarium took place on November 13, 2008. Again, I began with observing plant A. I was able to locate a few Rotifers throughout the plant, as well as one Epistylis near the plant's outer reaches. Diatoms were prolific throughout the tank, both alive and the dead siliceous cell wall. One Paramecium was also found within the cover of plant A. Life was much more sparse in proximity to plant B, where only a few Actinosphaerium were found, one of which I was able to observe reproducing.

Observation 4 11/6/08

Week Four observations began with a tiny slip. The microaquarium fell from fingers as I was getting it positioned on the microscope, and I lost nearly a third of the tank's water. I replaced the lost water with some provided by Dr. McFarland, but the damage had been done. The tank seemed to have undergone a massive die off during the time between observation 3 and 4. A number of Diatoms could still be found in various places throughout the tank, but much of the life that had previously been there seemed gone. Multiple unshelled rotifers were found at plant A; however, plant B appeared nearly entirely void of life.

Observation 3 10/30/2008

Observation 3 took place on October 30, 2008, and began again on the side of plant A. One Epistylis and an Actinosphaeruim were found in close proximity near the center of plant A. A cluster of seven Diatoms were found at the bottom of plant A near the dirt, with another small cluster of four Diatoms near plant A's top. One Haltera and one Tachysoma were found near each other at the edge of plant A on the microaquarium's far right side. Diatoms could be found scattered throughout the tank. Multiple single celled organisms could be found at various places around plant B; however, the same leaf "traps" that appeared to trap organisms in the previous week were empty. Three Euplotes were found in a close proximity near the center of plant B, witth others at various places around the plant. A few other organisms that I was unable to identify were found in various places of the tank.