Thanks for the helpful replies everyone.
To clarify I actually got Black Eyed Tree Frogs (From Michael Novy over at Rainforestjunkys), but I understand (correctly I hope!!) that the two species care is the same, it's impossible to find a care sheet for black eyed so I have taken to saying red eyed when online.
Lynn, yeah I have been preparing the vivarium since early July, and reading about the frogs for much longer than that.
When they are actually here though it's just so hard to leave them be!
When they are more settled in I'll try and snag a few pictures of them.
Thanks again everyone.