One of our LFS's has a LR set-up using a Fluval Edge ([ame]http://www.amazon.com/Fluval-12-Gallon-Aquarium-42-LED-Light/dp/B005X88XIK/ref=sr_1_8?ie=UTF8&qid=1361659396&sr=8-8&keywords=fish+tanks+fluval+edge[/ame]) tank (I think theirs is a 20 gal) and no specialized filtration/circulation equipment. The gal I spoke with said they have no issues maintaining the aquarium and the LED light the tank comes with is fine for the invertebrate & fish inhabitants. Has anyone ever done a set-up like this?