You're welcome! I am also reading on quite a few vet clinic websites that both a calcium dish and UVB lighting are recommended:
https://www.vetsecure.com/nilepointveterinaryhospital.com/articles/125
From what I am reading so far, it sounds like the real scare is not enough calcium and overdose of a supplement of D3. It sounds like if you provide UVB, the gecko won't absorb too much D3, but then can make use of any extra calcium. Without the UVB, the calcium is generally passed through the system. With too much supplemental D3, too much calcium is absorbed, and that causes additional problems.
Someone has been doing a lot of research!
I agree with the use of a proper UV light that provides both UVA and UVB rays for many reasons:
1) It will promote better vision.
2) The leopard gecko can regulate its exposure to the rays.
3) No possibility of overdose (unless, of course, it is used improperly) so no guessing games.
4) The leopard gecko will be more active.
So I am definitely planning on using a UV light. The main reason that people say that they do not agree with using a UV light for a leopard gecko is because they believe that nocturnal animals do not ever expose themselves to the rays, which is untrue. Many also do not know that leos are actually crepuscular. In reality, leopard geckos really would benefit from from a UV light rather than receiving vitamin D3 via supplementation. The issue, however, is improper use. Many house their leopard geckos in very small enclosures (which I do not agree with!) and use improper bulbs making them susceptible to over exposure. The skin of a leopard gecko absorbs more UVB than that of a bearded dragon. So, unless a person is able to use a UV light properly then vitamin D3 via supplementation is the best route.
I disagree with the use of a calcium dish because calcium carbonate is best when taken with food. Also, a couple of licks from a calcium dish is already a lot. They need enough; not extra. Excess calcium can lead to kidney stones and hypercalcemia. The safest way to provide calcium is by providing a varied diet, feeding a proper diet to your feeders, light dustings, and proper gutloading. Yes, there is always a concern that you may not be giving enough, but more is certainly not better. You can avoid calcium deficiency issues by regularly taking your leo to a vet. My question is do they truly know that that cap of powdered stuff in the corner is calcium? There are many conflicting opinions regarding the use of a calcium dish. This is just mine
