Blue-tongued skinks are one of the most durable "bulletproof" lizards one can keep. Very forgiving captives, little opportunistic omnivorous garbage pails that eat nearly anything, and relatively docile. Most certainly, if you go by half of what BlueTongueSkinks.net tells you, you and your skink will be just fine.
When I had mine, I kept them on about 3" of aspen shavings. Basking spot was usually around 100-110'F, and the low end was in the low 80s.
I never provided any UV lighting for mine, and they did great. I never even took them outside. I think most of my success on that front was due to a very well-rounded and balanced diet, of which I routinely supplemented with vitamins.
This is "Baby Sinclair" the last BTS we had. This is him at nearly 2 yrs...I had him since he was 1 month old and he never had a ray of UV light while in my possession.
I love them, and can easily see myself owning one again in the near future.
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As far as Backwater Reptiles goes, I personally have never heard of them. Someone else I knew recently asked about them, and according to a quick BOI search, they don't have a stellar reputation. In fact, another vendor I know whom I consider a "bad dealer" did not recommend them...if that says anything.