RipJohnson":220pzfot said:
Thank you.
So i read over that uk website way out dated the study was done in 2004to2005 im not sure if t5Ho where even out. Im going to do some experimenting with the 23 watt t5 ballast and the 54 watt T5ho ballastboth with reflectors and w/o and I even bought a mvb to do some testing on. From what i under stand there is a formula to convert uvb to uvi I think. But I think its just a estimate. its UVB/30
no that can very a lot. if its right my uvi is around 3.6. Is your 36 fixture a HO?
The UV Guide is still pretty relevant even if the reports are older. They have a new site (I'd need to find the link) as well as a group on Facebook (reptile lighting) and Fran and some others are pretty active there who can really help with the science of it. They also have test reports for the T5 bulbs and other bulbs with UVI and UVB irradiance readings.
The conversion formula is specific to each bulb. I think I remember seeing a list somewhere but since the spectrum of UV bulbs are all different and different from the sun there is no set formula.
I would not let them that close to a T5 bulb. Coopers estimate is accurate, I can't measure right now but close up my bulb reads a UVI of 13-15, much too high. Dragons can see UVA but not UVB, and again, our lights are not balanced the same as sunlight and have a lower proportion of UVA.