Doing some research for possible future pets. I've always wanted to get more frogs and I just love whites tree frogs!

We have a hexagon tank, it's more tall than wide, it ends up being about 36 gallons. Curious how many frogs would be comfortable in a tank that size? I love the froggie communities I see people with, and I love to hear them sing.. My plan is to have some fairly large branches in the middle to give them more places to climb--take advantage of all that empty space in the middle.

Anyone have any ideas? I'm open to other ideas as well for what will one day fill this cage!