Ooh, I am going to be doing the magnifier test as well as the paper test. I hadn't even considered that it might be broad mites... Yuck.
AlittleSalt, I agree that it definitely looks like septoria on some leaves. I am definitely hoping it is something that I can control... This just spread so fast!
I have pruned all the nasty leaves off my plants and am getting rid of them. I have been reading of using hydrogen peroxide on diseased plants in an effort to control the disease. Has anyone tried this?
Again, thank you all so much for the input!