Great information Eric. Besides helping with temps, the air circulation is great for your plants.

I presently have a similar top with glass over the screen so I can change the size of available screen openning at the top.
I have the air conditioner in my room set to push air towards the vivs. This air flows across the glass top to allow some air to enter the viv through the open screen area. So far so good ,with temps staying around 75 degrees for the Darts. Night time temps drop to about 71 - 72.

Humidity hasn't been an issue as I thought it would be with the air conditioner and knock on frogs, I hope it stays that way.