Re: Leucomelas Setup
Breeding in a 'large group' might be challenging, since females are known to eat others' eggs. I think breeding in a 1.1 or 2.1 is best.
Check out the video thread I started recently -- there's a great video of leucs in Venezuela. Note that the habitat is open and leaf-littery.
Breeding often involves modulating misting schedules and humidity, so flexible venting and misting arrangements would help. Plants that tolerate both kinda wet and kinda dry as needed would be good (so, moss or Tillandsia would be challenging at either end of the water spectrum).
I think I could turn and live with animals, they are so placid and self-contain'd.