I have some sort of Algae or bacteria growing on my glass. It seems to be
one big sheet and grows very rapidly. I wipe the glass clean one day and
the next it's already coming back. The algae does not have any hair and
appears dark green. The plants and substrate appear to be totally clear of
this. This is not green spot algae (at least nothing I've seen before).

Does anyone have any ideas on what this might be?

--
Craig Brye
University of Phoenix Online