There are scientists that still argue that UVB is beneficial for leo's, certain leo's under UVB will come out just before lights out and bask in it for a bit, when the UVB isn't in the same cage they will not bother to come out until after lights out.
They can also overdose on vitamin D3 in calcium, it crystalizes their organs over time.
I keep 5.0 UVB flourescents over my leo tanks, but it's more for the plants than the geckos.
Since putting them over the tank, though, one of my leo's has been coming out prior to lights out and staying out after the lights come on basking. So I suppose it holds some weight.
They can also overdose on vitamin D3 in calcium, it crystalizes their organs over time.
I keep 5.0 UVB flourescents over my leo tanks, but it's more for the plants than the geckos.
Since putting them over the tank, though, one of my leo's has been coming out prior to lights out and staying out after the lights come on basking. So I suppose it holds some weight.
. And a leo can live in a 10G for life