This looks fantastic! I'm sure this required a lot of work to set up.

I actually just purchased an exo-terra nano (8x8x12), and I'm looking to build a setup similar to yours. Do you let the orchids grow directly onto the coco fibers? It seems like most of your orchids are growing on the cork or mopani. I'm debating on using hygrolon as the substrate (it seems to be more bacteria/mold/fungus resistent). But, I much prefer the look of the coco fiber. Is there a reason you chose coco fiber over hygrolon?

I agree this set up looks fantastic. I'm curious what you used for the bottom substrate?

This is another great 12x12x18 terrarium. Do you have a new picture as I sure the terrarium has matured. I have enjoy my tank this size. Great job!