Originally Posted by sputinc7
Whatever it is, I don't think you should be too worried as the plant looks very healthy overall. Most likely has to do with a little too much water or fertilizer. I have seen bigger plants in smaller containers, so not likely that, either. Myself, I would have it in a bigger pot.
That said, I was hoping someone else who does container growing of bananas and maybe even has a SDC would chime in here.
I was worried that it was something serious...
PS I found out, that fungus can cause brown leaf spots. Is any method to make sure, this is not fungus?