A couple of my plants have an erruption of tiny brown spots on the lower leaves. No bullseyes. Any ideas? Should I remove the leaves and spray with fungicide? When I remove the leaves do I remove the branch the infected leaves are on as well?
Your problem is likely fungal, but there's a chance it could also be bacterial.
Have you looked through the pics in the tomato problem solver? That might help you to ID it. Septoria leaf spot comes to mind as a possibility based on your description, but it could very well be something else.