So earlier I had a compact reptisun 5.0 but was told I needed a 10.0 and one that ran the length of the whole viv. So I did that and call me crazy but it seems as if my little Rex is more active than he was earlier! I mean he wasnt lethargic before but it seems now that he moves around a lot more, glass dances for me to take him out more, etc. Seems like he just has more vitality after I got that 24 inch repti sun 10.0 and mounted it inside his viv instead of sitting above the screen like the old 5.0 did. Does it really make that big of a difference in so short a time to upgrade his uvb? Btw a little announcement I found a great herp vet in my area and rex's first trip to see Dr Pope is tomorrow.