Well thx guys. Seems like it will just become normal maintentence to have to clean this off. The only plant it took over was my water sprite and it has since recovered. So it isnt to awfully bad now.
The only thing I am battleing now is green algae on the glass. Which is why I got Otos. So far (4 days) they havnt managed to dent it. but it isnt getting worse either. I may have to get a couple more but want to see how it goes first, as I want to make sure there will continue to be enough algae to feed them.