Yes that's moss - I bought a vaccum sealed brick of the stuff.. and yes that's a waterfall. I'm still awaiting an ultrasonic fogger addition to it that fits underneath one rock part that comes off to reveal a reservoir just the right size for a fogger to fit in.

It will be totally awesome when it's done...

As for the frogs - I haven't ordered them yet. I am waiting till next week to see if one of the local stores will get any in. I'd prefer to buy it close to home. Frogs are too delicate to be shipping across the continent if you ask me. I would've gotten it from LLLReptile.com but they're in California and I am in Connecticut