O.k, cool. Thanks for the help!caferacermike said:nano meaning small, cube well cause it's a cube not a rectangle. Pico tanks are even smaller. Pico anything up to 3g, nano 3-40g, average 40-180, large 180+.
generally "nano cubes" mean that everythign is built in. They don't always have it perfect as far as lighting or filtration but you can do a low maintanence tank easily with one.