What are the dimensions of the tank? If you want SPS
you may want to go the VHO
or Metal Halide lights. In a tank that size depending on the height you can use VHOs and be ok. The types of corals you want will also detemine the flow of the tank. SPS
need lots of flow and softies need a little flow but not like the SPS
. Lots of things to consider for flow too, like closed loop or powerheads or both, sump or refugium with return pump or Hang on back skimmer and filters with returns. Live sand is a nice look but a lot of folks like the bare bottom for the ease of maintenance and clean up. Animal load too is very important becasue you don't want to put too many animals in there and throw the tank out of balance.