I just got Crittertrail primary and my dwarf hamster wont drink out of the water bottle?

You probably don't see them drink when your not there. Plus, they need to drink or they will not survive. Don't worry too much because it happened to me. Your hamster isn't used to the cage and its surroundings. Just give it a few weeks for your hamsters to feel comfortable and used to it. I was worried at first, until i saw it drink!! :)