Corrections: Viruses are considered nonliving organisms. They have DNA or RNA, replicate and evolve but do not have metabolism and are not made of cells. They rely on host cells to survive. Here is a great debate between two microbiologist on whether or not viruses are alive. https://microbiologysociety.org/publi...

Also, most drops have a volume of about 0.05 ml. This is about a 20th of the measurement in the video. I used that measurement since that is what I found in literature.

How many organisms are in a drop of water? In this video, I added grass into a beaker of water and left it alone. After a few days, I looked at what grew and put it under a microscope.

I use:
Camera Nikon D3300

Microscopes
Wards trinocular Microscope (not sure the model) 40X, 100X, 400X, 1000X American Optical One Ten microscope 150X, 600X, 1500X

The magnification is shown in the bottom right hand corner of each shot.