Thats fantastic! I really like the way you came up with a way to keep the front glass fog free. So as I understand it, all the vivs in the same row end up sharing the same air?
Each viv is beautifully put together. I think you just found yourself a way to make income when you retire. You could make those for people who aren't able to make them themselves, like me

.
One last question, what kind of palm plant is that that you are using in your vivs? I've seen something similar being sold, and get this, as a plant for the fresh water aquarium! I watched as the weeks went by and the plants slowly melted away in their store.
What kind of frogs have you got in there?
Thanks for posting, its a good learning post!