Especially for Newbs, do not mix species, especially treefrogs or anything tropical.

I wont go so far as to say that one should NEVER mix species. There are conditions under which it can be done, but it is one of those things where only people with a LOT of husbandry experience should ever even contemplate attempting it.

You know those people who set up really big replicas of natural ecosystems for fish that are all found in the same flooded south american forest? The people who have been keeping three hundred gallon tanks for fifteen years? You have to be like that, but with frogs.