ok its just how am i going to get that thing on a 12 by 12 by 18 exo terra? And do you know if the exo terra dual head thing is ok for the top? Do they sell small repti sun kinda things, because i was going to go with no uvb for the pygmies but i decided too, like i dont want to sound stupid, but isnt a little uvb bulb better than no bulb?