a very big tank. even a 360g would be pretty small for a really big one. idealy youd want closer to 500g or more, with a good filter . bigger the better. ofcorse you can start off smaller but they grow really quick so you want to start pretty big anyway. you need atleast enough room for it to turn around comfterbly and be able to swim around and you talking about a fish that gets over 3' so you want a decent footprint. I woudlnt think the depth would be as important but deiffily not too shalow. hope this helps.