it really depends on wad u wan to keep and wad kind of equipmemts u hav....for a tank size lyk tis..i suggest u keep some nice littles softies and some small little hard corals...
if u do hav a chiller installed, go for mh...
if nt the minimum u shld go for is PL tubes..
oso take note that if the temp is high, evaporation takes place very fast....