Here is my sketch for vivarium.
How do you think of it? There's couple of heating stones and on the top fluorescent tube lights.
On the bottom there's going to be water circulating via filter and a waterfall to keep vivarium moist. Above it strong grid and mesh avoiding surface material dropping down. Surface material is crushed bark deep enough to plant the orchids. There also a big branch geckos climb around and orchids on it. Back wall is covered with material I can use suspending more orchids.