I have recently done three dart enclosures.
The are all exo-terra tanks.
I removed the screens in the lids and replaced it with glass.
(BTW way this was not difficult- even for a weakling - like me !)

I have been ventilating with a little fan, but it is not a perfect solution without .........of course, spending more $$$$ to make it right.
Plus I would need three of what ever I did.

My little weekend project:
I am going to use a fish tank air pump and 1/4 tubing? I'm planning to pass the tubing through the 'cord holes ' that are in the lids.
FYI- the entire front of the exo's are vented under the doors, so this could exchange the air. I think ?

Just wondering what everyone think about this idea.

Fondly, Lynn