But you said you liked Don's idea...xD...confused. Hmm...
Edit: So what's the point in "pond" area of the vivarium setup for dart frogs on this forum? As in, the guide for the setup where it shows how to add the drainage layer...it has a pond area, what purpose does that serve? Also, I know some people use PVC couplers (I think they're called) and then the egg crate on top with their drainage layer in some way? How does that work? Would you add the....I forget what it's called..the substrate on top? (It's the three syllable one xD I don't wanna google it because I don't know it and if I just google it I'll forget...)