Is this enclosure ok for a White's Tree Frog?

[Yusil]

Possibly.

Not an expert on these frogs particularly, but tree frogs in general tend to like more height then anything else.

That doesn't sound too bad for a single Dumpy Tree Frog, but perhaps you can upgrade to a taller tank, rather than one with so much ground room. When you can ofcourse. He shouldn't be too upset in the tank you have.

People usually buy tanks Tall specifically for tree frogs or turn Long tanks onto their sides and substitute it as a Tall tank, and put a screen on the opening. It's actually recommended for this species to be in a 20Gallon tank, but I'm assuming Tall, since it is a Tree Frog.

Also, I'd take a peek at the Dumpy Tree Frog caresheet .
Frog Forum - White's Tree Frog Care - Litoria caerulea

[helm96]

If you did a vertical conversion on it and made it 30" high then it would be perfect for up to 2 Whites. I have mine in a 24" high and they utilize every inch of the vertical height. Keep in mind by the time you add substrate and what not to the bottom your 18" height will turn into more of a 14-15" area usable for the frogs. I have about 20" of height in my tank and my Whites can jump from the bottom all the way up to the top branch that is a few inches from the top. Tree frogs need vertical and not as much horizontal.

[NatureLady]

I agree with Will, turn it and make it a vertical!

[mrzoggs]

although i think it would be ok for now, a vert would be ideal.

[DC101]

The rule of thumb is 10 gallons per frog so 3 would be ok.