He can go in a full size tank now.

People always talk about too big of a tank for a smaller BP.

I think that's BS. They thrive in the wild for crying out loud. If he has 2 good hides, he'll be just fine no matter how big the tank is. Especially if it's in a room with nobody walking by constantly he'll feel perfectly secure.

I moved mine into a 36"x18x18 when he was 6 months old and he is completely normal, healthy, happy and growing strong at 11 months old now at about 750 grams.