13-09-2011, 08:27 AM | #11 |
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Will have to have a little play with the set-up I was planning to do to fit that bulb chris as I'm planning on doing one table split in two to enable me to have younger hatchlings and older ones in one table and have the uv all the way across the back. But then I could hang this over the devide and they would get uv from the deviding wall out, will see what the shop has when I get there later. But then it may not work with the heat either think I'll build it and see, have all the wood so It wont cost me much apart from time.
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13-09-2011, 08:29 AM | #12 | |
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If it is a true UVB bulb... you can't use a dimmer. They are very sensitive to the electric current. With any variation... they shut down. They are very similar to a flourescent bulb in operation.
If you can vary the current on the bulb you have... it is not a UVB bulb... unless I missed some new technology in the last couple of months. UVB bulbs that screw into a socket are Self Ballasted Mercury Vapor Lamps... as far as I know. Quote:
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13-09-2011, 08:34 AM | #13 |
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Think I may have confused things, at the moment I have a uv bulb in a screw fit fitting straight to the mains and a separate heat bulb controlled by a dimming stat, the one chris was suggesting was a combined one that from what I now understand does away completely with the heat lamp and dimming stat.
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13-09-2011, 08:39 AM | #14 | |
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Your set up is better because you can control the heat. With a UVB/Mercury Vapor lamp you can't control the heat except by raising an lowering the lamp. Go with the tube an a heat lamp or ceramic emmitter or heat mat.
Quote:
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13-09-2011, 11:02 AM | #15 | |
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EJ is in a very tiny minority in thinking that hatchlings do not need a 10 or 12 tube at least. There is no evidence of any possible excess of uvb causing harm.
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13-09-2011, 11:11 AM | #16 |
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The word tube here is crucial. If its a tube it does not generate a Significant amount of heat and cannot be used with a thermostat.
If its a heat and uvb bulb then it is sold at so many watts not at a % of uvb. Combined heat and uvb bulbs must not be connected to thermostats. Sorry Paulus if we are swamping you. Please can you double check exactly what product you plan to buy and we can be definite.
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13-09-2011, 12:56 PM | #17 |
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Hi guys, the only confusion I had was how I would control the temp with the bulb chris linked me to, I currently run a UVB screw fit tube and a separate heat bulb run by a dimming stat. I can't afford the combined bulb at the moment so will probably get a higher UVB tube as I can at the shop later for the mean time.
The problem arose because the UVB bulb I have is only a 5% UVB so I gather it is too low Appreciate all your advise and have taken it on board |
13-09-2011, 04:17 PM | #18 | |
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Wrong on 2 counts. Please explain what is the required UVB for a tortoise.
Too much UVB has been implicated in causing eye damage. Quote:
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13-09-2011, 07:02 PM | #19 |
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Well...
I guess that you already have read the info on http://www.uvguide.co.uk. "Some reptiles are described as "sun-worshippers" including uromastyx, bearded dragons, chuckwallas, and many species of tortoise. In the wild, these spend many hours a day exposed to hot sunshine and high UVB levels, in places such as the Mediterranean, Arizona and the Australian outback where peak readings of 350 - 450uW/cm² are commonplace for two or three hours a day, around noon, in the summertime." They have alot of graphs and info on the page for example one 5.0 24" flourescent tube without reflector gives aprox 100uW/cm² at 2" distans from the tube with reflector the uW/cm² almost doubles, but 2" is pretty close and ypou still only get aprox 200uW/cm² not that much compared to nature 350-450... Br Anders |
13-09-2011, 07:14 PM | #20 | |
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Long before the intennet... Check out the writings of Dr. Gary Furguson.
You ever see one of those animals basking? Eyes always closed. Regardless... could one of you control freaks answer the question at hand just once... How much UVB is actually required. I ask this because one (I'm sure more) states that they NEED... this implies that the requirement is known. I know it's not. It's a basic question. No. More is not better. Another regardless... I suggested the 10.0 tube from the beginning. Quote:
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