Hi. I'm thinking of buying a bearded dragon soon, but I'm not sure that I'm filling all the requirements to keep a bearded dragon happy and healthy. I currently have fish tank that I'm thinking of changing to hold a bearded dragon, but the measurements are 36x12x19-20. I've heard that the minimum measurements are 36x18x18, so I'm worried that the tank will be too thin and that the bearded dragon may not be able to turn around easily inside. I'm fine with waiting until I have another tank, but could I make do with this size? If not, I would rather have a happy beardie than buying one now with the 40 gallon tank I have.