UVB and vitamin D3 production from it...

kinyonga

Chameleon Queen
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.
 
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.
 
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