I had a 20 tall with two white's tree frogs although they don't do a lot of active climbing. They pretty much stuck to the top of the tank behind some false plants. They came down to soak and to eat the pinky mice/rats. They were never very active in my experience. I'm not sure how many you can hold in that tank. We rescued them from a house so we inherited the equipment. This was many years ago! They live a super long time though. Overall, they were great pets!

Regards,

B