Greg Gilmore is a long-time hobbyist who has kept everything from a 90-gallon reef to a 7-gallon one. The 7-gallon has been up and running for about seven years now, and continues to thrive.
An underwater view of the 7-gallon nano.
Greg has designed most of the setup on his own, building his own equipment when necessary. In fact, he set up the reef in such a way that it prevents the tank from overflowing.