I want to make sure I get him healthy first and have the temps and everything right before I decide to get him a buddy. I didn't know they were communal type frogs. I will see about getting more vines for him to climb on. I knew Exo-Terra had many sizes available. And as for substrate, I don't have any in his enclosure because it is all screen and I didn't want to worry about making a mess if the substrate happened to be able to go through the screen. The slick bottom makes it a breeze for clean up!