Hi I am new to the forum and new to growing. I noticed about a month ago that there were black spots on a couple of leaves but I figured it was just dirt from transplanting into larger containers. I can wipe some of the spots off, this is why I thought it was soil. Now to my shock every leaf on all 3 of my plants have black spots and the leaves are dying from the bottom up. Upon further inspection I thought I saw some of the spots were moving as if they are infested with bugs. But there are so many spots that I am thinking my eyes were playing tricks on me. When I look again I can't see anything moving at all. There are just so many spots! Here is a picture. Do you know what is going on with my plants?