I found this although my design is far far superior :-)
I'm going to use an air line down to a Tee which will be attached to two lengths of weighted bubble wand covered with moss. If I do this right I can occasionally add a little fert like adding morphine to a drip bag. This would minimize the amount of CO2 and fert necessary making it easier to balance my tank.
A couple small shots of CO2 across the branches once a week ought to do wonders.
I like it :-)