beared dragon tank size

Question
when should i move my bd into a larger tank he,s only 2inches nose to tail ,,he,s in a small starter tank i got with my leopard gecko the gecko,s in a new bigger tank  

Answer
A adult bearded dragon needs a 40 GALLON BREEDER TANK, avalilbe from petstores or reptile suppliers, i have no idea what size tank he is in but a gecko "starter" cage sounds at lest three times too small, you can get him into a ten or twenty gallon fish tank for now.