To be able to see the microorganisms we want in our soil well
enough to be able to distinguish the good from the bad, you will need a minimum of 2500 X.
Bare Minimum
1/2 step up from bare min.
easier to use
good basic kit
To really see the organisms well you want binocular, the last one is pretty good without getting in the 300 dollar and up range plus it comes with slide prep kit and a book on how to use the microscope.
Redhawk