Not the richest person around so I decided to craft a 85x36x36 arboreal terrarium out of a wood frame. Basically consists of four wood pillars and a wooden base which give it structure, and everything else is aluminium mesh used to keep bats from getting to the ripe fruit here.

The wood isn't necessarily new, but what would you think about its stability? Any strengthening ideas? What should I coat both the base wood and the pillars with to make it inert and safe for the frogs?

The aluminium mesh has got some rigidity to it. Slightly worried about the tree frogs jumping into it and getting hurt. Opinions?

Additionally, I forgot to account for the necessity of a false bottom. Does anyone have any improvised ideas to suggest?

Thanks for the advice.