Fishies betta?

I need to find a nice little kit for my BIG betta, i have him in a 2.5 gallon all gl aquarium right now, which the only reason i might be moving him is because i cant find a fluorescent light fixture for a 2.5 gallon, so if anyone could tell me where to find a light fixture for it, that would be great. And if not, a nice little kit with a fluorescent light fixure.