Hi, it has been a while, but my dumpy treefrog has grown a lot, and its time for a new tank. It is just one male and I'm not planning on getting another (though I would like the option to keep one more female if I could later on). So I want to get an exoterra tall terrarium for him. What would the minimum size for him alone be? (and the size if I got another). Also what is the best way to make a waterfall or running water system for the terrarium? Thank you in advance![]()