Post by dominick on Apr 24, 2004 21:09:42 GMT -8
Hi Folks-
It has been brought to my attention that I have accidentally mis-represented a statement of facts concerning Bob Mac and the MV Spot temperatures, as well as other information. I'm truly sorry for this as I simply paraphrased what I thought I read and understood. My bad!
As the information on this thread is not a true representation of the "facts" I have removed the posts.
When I have the opportunity to reassert more accurate information I certainly will.
The biggest mistake was that I was singling out MV use and it's possible dangers, when in fact all light and heat sources pose certain dangers.
To clarify the statement that MV Spot temps show only minimal increases in temps, I'll add Bob's recent re-explanation of his statements, in it's entirety, posted to the UVB Owner group.
<POSTED TO UVB METER GROUP ON 4-24-04 BY BOB MAC>
"Recently on another forum, I read a partial "quote" of a statement I made on MV SPOT lamps. (It is apparent why David Kroughoff is adamant about only quoting in complete context).
Just so its clear about (and I believe I made it so then) when
testing the surface temperatures with a IR Tempgun of the bright spot of the MV, I have found there to be only a very small difference in the "circle" and several inches away on a LARGE iguana. I thought that I was clear that this would change according to the mass of the creature (size and weight, the smaller the reptile, the more drastic the differences), ambient air temperatures, color of the reptile, distance of the lamp, and so on.
To be sure I was correct (yes, I do question myself when disputed publicly on occasion, best to be sure the information is safe for the animals), I went and checked the Pat Dog iguana in my office again even though I have done this hundreds of times with dozens of igs. The ambient air in the Dog room is about 80 degrees. The 100wt MV SPOT lamp (on an angle) is 14" from the surface of the Dog. The "hot spot" on his back was 104. Three inches either direction was 101-103. His gut was 92. Core was most likely 95-97. He spends several hours a day under his lamp to get to these temps (14 pounds takes a while to heat up) before he moves to lower shelves, or the floor of his room or the desk across from his habitat.
The statement I made was accurate concerning the surface
temperatures inside and out of the "spot" concerning a LARGE living creature (I really knew this, but good to make sure)
When I checked the surface temperature of the shelf after he moved off it (he thought he had a chance to eat me) I checked the surface temp of the bright spot. It was a whopping 128 degrees! Last time I checked the surface temps of that shelf with the same bulb with the same ambient air temperatures the spot was only 105 degrees. What happened to make such a drastic difference?
Remember that darker colors will absorb more of the light energy and change it to heat in doing so? The Dogs shelving was covered in a light tan indoor-outdoor carpet when I set this habitat up in my office originally. About two or three months ago I had an opportunity to buy large piece of really expensive indoor-outdoor boat carpet at next to nothing. Its extremely soft and its……..DARK GREEN. For many years I have used a neutral colored substrate on my basking shelves and always had relatively easy time adjusting basking temps.
The suggestion Chris made of using a thermometer the same color as your ig wasn't a bad idea, was it?
Please keep in mind that this would be the same difference
regardless of the light/heat source. Mercury vapor is no different than any other lighting heating herpetological tool. Always triple check basking area temperatures and never allow direct mid day sunlight to hit the basking area especially through a window.
As a side point, in the excel spread sheet in the files section, you will note that MV lamps consistently ran lower emperatures than all the other type of lamps tested with the exception of a incandescent black light.
Best,
Bobmac"
Please consider his explanation carefully. It contains some very good advise and info about Mercury Vapor Lamp use.
For more complete information please visit the UVB Meter Owners group at: groups.yahoo.com/group/UVB_Meter_Owners/?yguid=161089826
It has been brought to my attention that I have accidentally mis-represented a statement of facts concerning Bob Mac and the MV Spot temperatures, as well as other information. I'm truly sorry for this as I simply paraphrased what I thought I read and understood. My bad!
As the information on this thread is not a true representation of the "facts" I have removed the posts.
When I have the opportunity to reassert more accurate information I certainly will.
The biggest mistake was that I was singling out MV use and it's possible dangers, when in fact all light and heat sources pose certain dangers.
To clarify the statement that MV Spot temps show only minimal increases in temps, I'll add Bob's recent re-explanation of his statements, in it's entirety, posted to the UVB Owner group.
<POSTED TO UVB METER GROUP ON 4-24-04 BY BOB MAC>
"Recently on another forum, I read a partial "quote" of a statement I made on MV SPOT lamps. (It is apparent why David Kroughoff is adamant about only quoting in complete context).
Just so its clear about (and I believe I made it so then) when
testing the surface temperatures with a IR Tempgun of the bright spot of the MV, I have found there to be only a very small difference in the "circle" and several inches away on a LARGE iguana. I thought that I was clear that this would change according to the mass of the creature (size and weight, the smaller the reptile, the more drastic the differences), ambient air temperatures, color of the reptile, distance of the lamp, and so on.
To be sure I was correct (yes, I do question myself when disputed publicly on occasion, best to be sure the information is safe for the animals), I went and checked the Pat Dog iguana in my office again even though I have done this hundreds of times with dozens of igs. The ambient air in the Dog room is about 80 degrees. The 100wt MV SPOT lamp (on an angle) is 14" from the surface of the Dog. The "hot spot" on his back was 104. Three inches either direction was 101-103. His gut was 92. Core was most likely 95-97. He spends several hours a day under his lamp to get to these temps (14 pounds takes a while to heat up) before he moves to lower shelves, or the floor of his room or the desk across from his habitat.
The statement I made was accurate concerning the surface
temperatures inside and out of the "spot" concerning a LARGE living creature (I really knew this, but good to make sure)
When I checked the surface temperature of the shelf after he moved off it (he thought he had a chance to eat me) I checked the surface temp of the bright spot. It was a whopping 128 degrees! Last time I checked the surface temps of that shelf with the same bulb with the same ambient air temperatures the spot was only 105 degrees. What happened to make such a drastic difference?
Remember that darker colors will absorb more of the light energy and change it to heat in doing so? The Dogs shelving was covered in a light tan indoor-outdoor carpet when I set this habitat up in my office originally. About two or three months ago I had an opportunity to buy large piece of really expensive indoor-outdoor boat carpet at next to nothing. Its extremely soft and its……..DARK GREEN. For many years I have used a neutral colored substrate on my basking shelves and always had relatively easy time adjusting basking temps.
The suggestion Chris made of using a thermometer the same color as your ig wasn't a bad idea, was it?
Please keep in mind that this would be the same difference
regardless of the light/heat source. Mercury vapor is no different than any other lighting heating herpetological tool. Always triple check basking area temperatures and never allow direct mid day sunlight to hit the basking area especially through a window.
As a side point, in the excel spread sheet in the files section, you will note that MV lamps consistently ran lower emperatures than all the other type of lamps tested with the exception of a incandescent black light.
Best,
Bobmac"
Please consider his explanation carefully. It contains some very good advise and info about Mercury Vapor Lamp use.
For more complete information please visit the UVB Meter Owners group at: groups.yahoo.com/group/UVB_Meter_Owners/?yguid=161089826