for a 30" tank (mine are 30 breeders), i got a ODYSSEA 30" 130W Aquarium Power Compact Light 3 cords. tried a 36" coralife, but the extra 6" was both ugly and a PITA with other equipment around it. i stage the bulbs to keep algae at bay, and the design of the legs are actually more elegant than the cheap ones coralife uses. pretty cheap for light fixture, though you will need to replace the bulbs it comes with.