A little dilemma.

[GarterPython]

Ok so as some of you know I have a something gallon (don't know the exact size but its big. In the tank I have some anoles, long tail grass lizards and might get some tree frogs. Anyway I was wondering if it would be possible to add poison dart frogs. I have heard lots of things about the topic and it is really contreverial but I want to here your opinions. I heard that if you have enough room and only tree lizards that don't try and use the same territory then it should be fine but I just don't know. Here is the picture of the tank. (You can't really see the floor space but there is enough there for a couple of poisons if I can. Never mind will post pic tomorrow because its not working.