[corvettephreek]

i would stick to catsharks.... their size allows you to keep them in tanks of that size, even until after adulthood. the banded coral cat shark, bamboo shark, and a couple of others would be great. if you plan on having a nurse shark or a white tip, i strongly recommend at least 1000 gal. capacity, as they get huge and need plenty of room to swim around. not much lighting is required for sharks, dim at best since they are mostly nocturnal creatures. for any shark you need to make sure a healthy supply of food is available, and my strongest suggestion is to find those shark eggs they have in stores, that way your shark can grow healthy and strong, so you can keep it as long as possible. these are just my opinions, and good luck with your shark tank!!!