Well, if I were to do it, for one, I would not even consider doing it in a room that had wood framing. I would only consider doing it in a basement with masonry foundation walls. This leaves only one surface where there is wood framing, the ceiling. Masonry is much easier to waterproof than wood framing. Which brings me to the MOST important thing. Water proofing. The entire thing would need to be sealed. 100%. This is why is should not be done as a DIY project, but by a professional display designer. Water vapor can get places when you couldn't even imagine. All you need is one tiny pinhole somewhere and moisture can escape, and well, I don't think I need to tell you how much damage that can cause. And it will happen behind the scenes, where you won't notice until bad stuff starts happening. Black mold and respiratory problems being the worst. And all this is even BEFORE you get into heating, ventilation, air circulation and all the rest of the goodies.

Lighting presents new issues, since they would need to be inside said room and would need to be waterproofed to prevent corrosion.

It's an adventuresome project, but not really feasible for the normal human. But, if you had enough $$$$, then anything is possible.

The 'realistic' option would be a heated, outdoor greenhouse converted for amphibian life. That could be done much more reasonably.


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