i bought a exo-terra terrarium, 18x18x24, using two 20 inch all glass strip lights with 2 lifeglow 2 6700k bulbs. what i want to do is a false bottom with a water fall to house dart frogs. i bought the egg crate and fiberglass screening, and i ordered the ceramic substrate to use for drainage.

would anyone have some ideas how i could set this up with a recirculating waterfall maybe using a possible powerhead etc? how can i enclose the pump and what pump should i use, and how do i pool the water etc lol any advice is MUCH appreciated!!!!!