I am looking for a good online resource for setting up a completely natural self contained vivarium for Poison Dart Frogs. I am going to be using a 55 Long aquarium for this. Things I would like it to include would be a waterfall, small stream, pond, live plants, and a background of some type. I was also curious as to how many frogs can be kept in a 55 gallon long and what other herps can be used in conjunction with the frogs? Maybe a gecko or some type? We are going to be using this setup as a display so I would like to make it as full of live (both plant and animal) as possible. Thanks for any help that you can offer me.