Hi there, I can help you out, I have 1 female and 2 male Gray Tree Frogs.

A 10 gallon tank is fine for Gray Tree Frogs, you need to have some coco fiber substrate on the bottom and a water dish with de-chlorified water. These frogs like sticks and branches to climb on and fake leaves (these are chameleon-like frogs, can change color from gray to green). Temps, should be 78 degrees in the tank, spray two to three times a week.