I'm interested in getting a BRB soon, so I have some questions! First of all, what's a good size tub for a baby? I believe a 6qt/15qt will do? How long would it take for him to grow out of it? And when he does, what do I move him to as his juvenile cage before his permanent adult cage? As for the 6qts/15qts, do I clutter the tub with decor or is that not necessary? I want him to feel secure. Finally, substrate. What do you guys use for your BRB's? I'm thinking of using Eco Earth. However I've been hearing that they have bugs in e'm, i don't like that haha. Thanks!