I'm picking my little guy Kevin (ball python hatchling) up on Wed, I'm just putting the finishing touches on his enclosure. My concern with a screen top is heat loss, so I'm thinking of putting aluminum foil or some other type of barrier. over of the cover. I obviously won't cover the whole thing, I need room for the ceramic heater above the tank. The other though is a plexiglass cover a hole where the ceramic lamp is. One is obviously more expensive, but I want to do what's best. Thanks in advance.