UVB and vitamin D3 production from it...

[kinyonga]

Concerning UVB and vitamin D3 production...this is one good site that explains a lot about UVB and D3....
http://www.uvguide.co.uk/vitdpathway.htm
"hypervitaminosis-D is not known to occur in basking reptiles (or any other species) obtaining their vitamin D from sunlight, regardless of how long they bask.23 This is because there are inbuilt safety mechanisms preventing overproduction of vitamin D in the skin"...
Please read the article so you can understand the whole process.

 

[BostonKeith]

i believe bill did a podcast on this. He is doing a study with just uvb and no vit a supplements looks promising i guess!

 

[kinyonga]

I'm sure you can raise/keep chameleons with just UVB and no D3...it happens in the wild after all, doesn't it.
What I was trying to bring to light is that chameleons do not develop hypervitaminosis D3 from exposure to UVB light.

 

[BostonKeith]

yeah only from over supplementation