thanks for the compliments guys.
carl, i wanted multiple levels on the bottom because i thought it would look more natural. since the tank does not have a sump or skimmer, i wanted the nitrate reducing benefit of macroalgae. i decided that it would be easier to keep it from taking over the tank if i walled it into that corner. so far it has worked pretty well.
yes, i have a wave box on the tank set at its lowest power setting.