mike - you really are a god! its like youve read my mind or something!!!
ive been reading all of the old threads on the gw terrarium forum because ive wanted to make a tank for orchids that need higher humidity. what are your temps like? i really really really (did i say really?) want to grow some dracs and masdes....and judging from the info on the gw forum, a cool tank is kinda the holy grail in the terrarium world.
that water wall thing that youve got must cool the tank a bit, yes?
what plants do you have in your current setup?
covet, covet, covet....