500 gallon vivarium, how many frogs?

Hello folks,

I'm new to the forum and am converting a 500 gallon reef tank into a vivarium to keep as many dart frogs together as are confortable. I know that everyone frowns on mixing species in small setups, but I wonder who has had experience with big setups and reasonably how many frogs can be comfortable with 24 sq. ft. of bottom area. I hear that the American Museum on Natural History has an exhibit going on now with something like 250 frogs.

Thanks,

Dave