So I am wondering if anyone has used bentonite clay as a barrier for a water feature? This kind of clay is the same stuff they use to make ponds in the ground, and it would allow me to make more of a natural slope to it. Thoughts, opinions and Ideas, all welcome. Also has anyone put an aquarium inside of their enclosures? Like an 80 gal aquarium with shrimp and snails an stuff. Just playing around with ideas. Thanks guys