Week 4

For the final observation, I didn't notice a big change throughout the MicroAquarium since the last observation. The water level had continued to drop however, it was half of what it started out to be and therefore the aquatic plants were mostly exposed. Yet, the plants were still mainly green although a few spots had started to brown. The beta food pellet was no longer visible. While observing, I saw the effects that the beta food pellet had on the MicroAquarium. With its presence, it had the MicroAquarium burst with microorganisms due to the nutrition added, yet I am now noticing how with its absence, the microorganisms are deceasing. With the help of McFarland, I was able to find several microorganisms that were still present. Such microorganisms were Philodina sp. (Picture 1), two Heliozoa splitting (Picture 2), and lastly Fragilaria sp. (Picture 3). When looking for organisms throughout the MicroAquarium, McFarland and I noticed that there were microorganisms present, just not in abundance as they used to be.

                                                                   Picture 1

                                                                   Picture 2

                                                                 Picture 3