Lighting options for 20" cube?

[GreenSpottedPuffer]

Its going to be mainly softies with a few sps but nothing all that high light this time. Just easy so I wanted to go with T5's if possible but I can't find anything under 24". I don't want a 24" fixture because of the look (over hanging the tank). I had the 250MH pendant over the tank before but that might be overkill this time.

Any ideas? Or maybe I should just go with a single MH over this tank again?