My husband has wanted a bearded dragon for years, and we plan to purchase one too. Before we do so I want to make sure we have an adequate aquarium (glass) size. I've read bearded dragons need no less than a 40 gallon tank when they're adults. We have a tank that is roughly 35 gallons. I know it'd work at first, but we'd like to know if we could continue to use it through it's adulthood. Also it's only 13 inches tall. Is that alright? Thanks for the help. I'd love to not have to buy a whole new tank if I can get away with it. But I do want to make sure our bearie would be happy.
For bearded dragons, it's more about the length and the width than the height. A 40 gallon tank would be 36x18x18. If your tank is at least 36" long and 18" wide, it will be good enough when it gets to an adult. If it's smaller, it'll probably feel a bit cramped for your bearded dragon as it grows. I prefer a 40 gallon as opposed to a 55 gallon myself since the 55 gallon is only 12" wide so that gives the dragon less room to move.