Check out some stuff from Scott Fellman on biotopes if you're looking for something different. May not be everybody's bag but he challenges reefkeepers to try something different from the rock wall approach. I'm basing my tank on a Palau reef rubble zone and am going with an assymetrical mound approach. I am pretty happy wth my rock layout (ok about 75%) and need to get in and do some minor tweaking before getting my critters
