Two days ago I met a guy that had one exactly like this. He has the paludarium running for two years and it is absolutely amazing. Inside there is just a large piece of epiweb folded here and there, 2 nice nd large pieces of wood and a tiny pump attached to a spraybar that is placed at the top. The spraybar just drips 24/7 and in two years all the paludarium is plenty of Java moss and other local species, local ferns... No rain system, no fog system... just the described dripping system and some manual spraying everyday. Frogs were hidden except some babies, but he showed me a video on his phone of what happens every day... And believe me, this is even better than the paludarium aspect. The frogs (don't know which species) sing like birds but all together, it is a very special and peaceful sound, absolutely marvelous.
Jordi