An article here on my on how to setup a soil based aquarium. I've done this with as large as a 55 gallon now. I simply love these setups.
http://www.tankgeek.com/2011/01/17/simple-walstad-vessel/
Enjoy,
Cory
http://www.tankgeek.com/2011/01/17/simple-walstad-vessel/
Enjoy,
Cory