WOW! that web site is full of it. Here's a [aragraph from it:
A 45-gallon hexagonal rainforest tank is home to a dozen assorted treefrogs. These run the gamut from Australian White's treefrogs to Borneo eared treefrogs, American barking treefrogs and Malaysian flying frogs.
Wowo, I'm speechless. I wouldn't dream of keeping all of those frogs in the same tank, especially whens its only 45 gallons. Those people are nuts. I can see mixing tortoises, and box turtles, but frogs.....no.