Hey all, so my bearded dragon is almost a year old and I've been using this T8 10.0 18 inch uvb bulb this whole time. Just swapped it over to a 12 inch T5 10.0 bulb. So far it seems to be a step up from what I've been using.. even though it's smaller but I'm told T5 is way better especially since it sits above a 40 gallon cage shining through the screen. Any thoughts on that? Thanks!