I don't know that a 30 gal system is technically a nano...but over in the nano forum I've seen several pics of 30 gal reefs...look over there and you'll likely find several more very nice set ups.
Hey I was just wondering what kind of lights you have over your tank, Looks awsome and i thnk I might have to resort to rearanging my rock so that I have more surface area for my future corals. Great looking tank. Pondy