Just get a tank that's taller than it is wider for tree frogs with things to climb on and the water heaters fine when the temp drops but it does raise humidity. The waterfall is optional, being the tradie that I am, I built a waterfall and a pond area but didn't really see them use it. So I cleaned a vegemite lid and used that as a water bowl and in the morning it's always dirty so I presume they use it a lot.
They are wicked pets!
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