Aaradimian
Juvie Member
Hi all,
I have been following the forum for quite some time and was under the impression that I had things pretty well sorted in terms of light, heat, and UV. My smaller dragon is in a 50 gal tank with a Reptisun 10.0 tube mounted under the screen with no plastic cover and a reflector. My big guy has an Arcadia 12% desert tube, again with a reflector and nothing obstructing the bulb. Sounds good, but...
Using points from a credit card, I purchased a Solarmeter 6.5R because my bigger dragon has been "off" since brumating, and I was worried that maybe something still wasn't right with his husbandry. Turns out, this was a good move, because I hadn't taken into account the weakening (attenuation) of UV with distance. I know from the forum about the bulbs going bad over time & have been diligent that way, but this was a shock.
I have a bit of a science background and know that radiation like UV light drops off as the square of the distance, but we're talking inches here, so I was shocked to see how much loss I was getting. It turns out that even with a fancy bulb, I had it mounted too high, and he was getting some UV, but not the recommended dose/day. With distances corrected, I'm hoping his appetite returns, though I also had a fecal and exam done at the vet to rule out other causes & am waiting for results.
I guess my point here is that you can have all the right gear and still manage to use it improperly, and that even a few inches can make a significant difference in output at the target. The UV meter is expensive, but if you are having issues with your dragon's health and can rule out other things, it might be worth buying or borrowing a meter to 2x check your setup, along with checking out the manufacturer specs of the bulb you're using.
I have been following the forum for quite some time and was under the impression that I had things pretty well sorted in terms of light, heat, and UV. My smaller dragon is in a 50 gal tank with a Reptisun 10.0 tube mounted under the screen with no plastic cover and a reflector. My big guy has an Arcadia 12% desert tube, again with a reflector and nothing obstructing the bulb. Sounds good, but...
Using points from a credit card, I purchased a Solarmeter 6.5R because my bigger dragon has been "off" since brumating, and I was worried that maybe something still wasn't right with his husbandry. Turns out, this was a good move, because I hadn't taken into account the weakening (attenuation) of UV with distance. I know from the forum about the bulbs going bad over time & have been diligent that way, but this was a shock.
I have a bit of a science background and know that radiation like UV light drops off as the square of the distance, but we're talking inches here, so I was shocked to see how much loss I was getting. It turns out that even with a fancy bulb, I had it mounted too high, and he was getting some UV, but not the recommended dose/day. With distances corrected, I'm hoping his appetite returns, though I also had a fecal and exam done at the vet to rule out other causes & am waiting for results.
I guess my point here is that you can have all the right gear and still manage to use it improperly, and that even a few inches can make a significant difference in output at the target. The UV meter is expensive, but if you are having issues with your dragon's health and can rule out other things, it might be worth buying or borrowing a meter to 2x check your setup, along with checking out the manufacturer specs of the bulb you're using.