This week, I first noticed that there was no food pellet.  This caused an absence of concentration of organisms, but their numbers overall, had grown.  The paramecia, most of all, had divided and were about double in number from the first observation.  Several new organisms have also appeared.  The most abundant of the newer organisms was the diatom.  Diatoms are phytoplankton that form algae and contain chloroplasts.  I found diatoms scattered all throughout the MicroAquarium during this observation.  There was also an increase in seed shrimp.  Another organism I found, but only found one of, was the Arcella.