Thanks, the way my viv is set out, is that around the basking area there's different levels of branches/logs so he can go right up to it (obviously not touching) or he could bask up to, I would say 10-11 inches away from it.for a beardie I would say the tubes are better, I use tubes for my beardie but my frilly I find the MVBs better as they kick out a lot of heat and the frilly viv is 5' tall so it is needed but a beardie viv (not sure what yours is) is normally about 2' tall and the animals shouldnt really get closer than 12 inches from it or they may get eye problems