Please do not house two or more Beardies together no matter how big the tank is,what gender they are etc. IT ALL DOESNT MATTER. They will fight and one will eventually get injured and/or killed . + one wont get enough food,uvb and heat. If you really want another beardie then you will have to buy a second tank,
Uvb light,heat lamp, decor etc. Thats the only way to enjoy 2 Dragons