for that matter,
SH don't belong in a reef tank. the flow and temps are too high, not to mention the chances of undesireable tankmates is high.
if you're new to
SH, i heartily recommend that you set up a species tank designed around
SH, and do tons of research.
SH aren't like "normal" fish, and have a very special set of needs, which if met, can be kept for years.
BTW, 100's of gallons = about 1500 gals for leafies and weedies, and the tank must be about 6 ft tall.
HTH