I just bought a used graf apsco microscope so I can do my own fecal checks. It is a good brand, and it should work just fine. The eyepiece lens is 10x, and the three objective lenses are 10x, 40x, and 100x (so yay for seeing stuff 1000 times its original size!). A coccidiosis fecal float and egg count is a very simple procedure, actually. A McMaster slide is helpful for it, but it can be done on a regular glass microscope slide with a coverslip . I find parasitology fascinating, and while I hope not to find many nasty parasites and whatnot, I can identify them on my own and treat accordingly.