I've been talking with a local reptile rescue about adopting a white's tree frog they got in. They have pretty similar requirements to my pacman frog, so I've already got pretty much everything I need.

My free tank is a 20gallon long which I think would be great if I could get it vertical. With decorations for climbing it would probably still have enough vertical room to keep one happy for awhile till I get that figured out. I've heard of people modifying tanks before; can anyone tell me how you would do this?