I have a bc29 that is a mixed reef....but is sps dominant...upgraded steves leds retrofit...i have 15 different sps in there...plus zoas, palys, acans, some softies(torch, hammer, spaghetti leather)...a chalice and a gbt nem....plus a hitchiker xenia that keeps popping up in different places but never stays put. I know they all need diff requirements....i set my rock scape up in a steppe formation, with the sps at the top...and the others at their respective depths moving downward....some of my sps are still frags though...so they are on the frag shelf sitting high in the tank....