I would like to purchase a San Diego Black and Blue rosy boa along with a Kenyan sand boa, and house them together. I know they are both erycine snakes and from what I can tell need the same type of housing all around. They stay the same size if they are both the same sex which i intend to have to avoid mating or stressing. I know you can house multiple sand boas together if sexed and am almost positive the same goes for the rosy as well. I was thinking of housing in a 30 gallon with a small tree for the rosy and a couple hideboxes, maybe even a humidity box. i think calcium sand would be OK for a substrate, or possibly crushed walnut shell. If any owners could give me any advice or someone who knows about housing them together I would really appreciate it.