hi there.. Im trying to get my enclosure ready for a bearded dragon and im pretty new to all this. I've only just started but have a 120 x 60 x 60 glass enclosure. It has the sliding doors for a repitle and a big opening on the top so the glass doesnt effect the lighting. I was just wondering if i have to put extra circulation in the tank since it doesnt have any air vents on the sides, such as a lil fan ..? Or would i be fine without? Thanks :-)