A Exo terra small low is plenty large enough or a 10 gallon aquarium.
They don't need any kind of height like a tree frog does.
just deep enough substrate to bury them selves into so you don't hear their feet squeaking on the bottom glass.
Some frogs like to have a water dish to soak in from time to time and to do their business in LOL
Some frogs won't touch it. Like mine. So I took it out. But I make sure that the substrate never dries out.
But not soggy. That makes a unhappy froggy.
I have a Low and long that I plan on dividing in to 4 separate chambers.