First, welcome to the forum. Second, all these have seperate vivs right? None of these should be mixed, at all. Third, the search engine here is good. Lots of builds lately with pictures, that show step by step. False bottom is for water falls and filtration, drainage layer is all that's needed fir a planted terrarium.

30 days quarrntine for new additions. But whites will eat smaller frogs, make sure he's big enough to add, as stress of being eaten is just as bad. They should be close to the same size