I don't think Steve meant an L-shaped tank, I think he meant a rectangular tank that goes the full width from the front wall to the shower, and being about 40" wide. That's a cool idea too.
I was assuming no front access. Although front access is handy, I don't think it looks as good. I haven't seen a modern looking access - except maybe what "lastlight" did with his 404.
EDIT:
http://www.canreef.com/vbulletin/sho...ht=404&page=30
I think it would look better if the hinges were hidden, and the gaps had a lip behind them so you couldn't see light shining through.