Thanks a bunch for the details, Athene
. The gap is actually a good idea and would be great as a must-have for every type of terrarium as either way besides being a slot for placing lighting and other gadgets, there's a chance for excess condensed droplets to escape fast. I have an exoterra terrarium with two side doors that open up wardrobe style and a mesh screen lid. It wasnt meant to do the job right so I'm selling it off and opting for one custom extra large tank to be made that I'm gonna place my plants with emo humidity issues in. :P