claudiusx":28gu2d03 said:Incandescents give off uv also. That's why I said basically all light emitting bulbs do.
https://sciencing.com/lights-give-off-uv-rays-8332010.html
-Brandon
The physics of it is that the glasses in domestic light globes is basic common silicon based glass , this glass has a very low UV transmission (even for the very thin glass in the globes and the tubes, literally under 1% of the UV created in the globe on electrical excitation of the filament in globes or the phosphors in tubes gets through the glass.Incandescent light bulbs, the most commonly used light bulbs in homes, give off small amounts of UV light. The UV light emitted by these bulbs is so small that it's impossible for human health to be affected in any noticeable way. Incandescent bulbs won't cause sunburns and they won't help people or animals absorb Vitamin D. These bulbs emit only UVA rays.
claudiusx":26y2n1lv said:I don't see your point. I never said an incandescent puts out enough uv for a dragon. All I said was they do put out UV. Just because I didnt explicitly state how much they do with graphs and charts doesnt mean I wasnt aware of the amount being low.
OP was concerned about adding too much UV to his enclosure. All I was explaining was the differences about uva and uvb, and how any bulb he's going to get for hits dragon is going to put off some uva, but that's fine. The only reason I sent you that link was you stated that incandescents don't put out uva, which they do. I never said they put out large amounts of it.
<<< not likely to be issue as in the wild centrals and rankins are routinely active on sunny days when the UV is considerably higher than you will ever encounter in a viv using MVBs, MHBs, t5ho tubes.
See this viewtopic.php?f=6&t=234801&p=1806497#p1806497
in particular this graph of natural sunlight UV intensity
http://www.uvguide.co.uk/images/decsolstfairweather-800px.gif
which indicates UV level in their natural range a much as 3x to 5x higher than most artificial setups are providing. What you'll find is that the dragon simply bask long enough to get it's doseage of UVA & UVB and will then seek out a shady place.
This is what all my pet skinks and dragons do , and I've seen wild specimens do the same.
This graphic is all the guidance the OP needs
with the following recommended options
very small tanks :
MVB (or maybe a MHB) only for a very small floor area tank
or
incandescent or halogen or GU10 halogen + UVB200 for a small are tank not more than 40cm tall.
MVB or MHB + 10%UVB T8 (or UVB200)
or
incandescent or halogen or GU10 halogen + 10%UVB T8 (or UVB200)
for larger area tanks not more 40cm tall
MVB or MHB + 10%UVB* T5ho
or
incandescent or halogen + 10%UVB* T5ho
for larger aread tanks not more than 50 cm tall , * a 12%UVB T5ho will be better.
Taller larger area tanks I'd go for a 14%UVB T5ho + high wattage MVB.
Remember, OP is looking for lighting options that won't be putting out strong uv, not the opposite. Which is why the original suggestion of any bulb that isnt specifically made to produce uvb will do fine.
Unless you're suggesting the green bulb you mentioned.... I dont see how all that relates to ops question.
<<< no - not suggesting any sort of coloured bulb at all. The data with coloured bulbs is simply as is (as I found it).
-Brandon
kingofnobbys":3eab8ul4 said:over thinking it.
He has a very small tank, I suggest a MVB and T8 12%UVB .
claudiusx":385fbgvt said:kingofnobbys":385fbgvt said:over thinking it.
He has a very small tank, I suggest a MVB and T8 12%UVB .
Why would you suggest two uvb sources in a small tank? Or did you mean this for the other thread?
-Brandon
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