Lionfish, how big is your tank, and how big is your shark now? Personally i don't think these should be sold at all by pet stores, as most people don't have a setup that will allow for the massive size most of these sharks reach. I wouldn't even consider one for my 300 gallon. Not to mention they prefer a mostly open tank to swim in. They look inviting when they're very young and still small, but most people don't realize most of the sharks can reach 4 ft in lenght! I've heard horror stories of people keeping these in tanks for years where they get so big they can barely turn around. I would like to see more pics of your setup and shark Lion.