UVB - NEED HELP

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UVB - NEED HELP

Postby Kayleigh1985 » Thu Aug 22, 2019 10:43 am

Hi if had my bearded dragon a week now and I'm concerned about how close the UVB bulb is to him. I'm worried about his eyes or that he might get burnt as he can touch it. He came with the vivarium so that is the way it was set up but I had bought all new bulbs. The UVB bulb is only 5 and a half inches from that shelf. Is that too close?? Any advice is more than welcome, thanks, kayleigh.[Click image to enlarge]
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Re: UVB - NEED HELP

Postby CooperDragon » Thu Aug 22, 2019 10:51 am

That looks like a T8 bulb to me. Do you know how old it is? If it's over about 6 months old I'd replace it. If it's fairly new, then you might consider getting a reflector to fit behind it and then move it a bit so it's attached to the ceiling and a bit more out of reach. A T8 isn't very powerful so it's best at around 6-8'' (with a reflector) but it's still a good idea to keep it out of reach. As long as it's sitting overhead it shouldn't cause visual problems and the output is low enough without a reflector (and it doesn't get hot enough) so the distance probably isn't harmful as long as he can easily get away from it if he wants to.
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Re: UVB - NEED HELP

Postby Kayleigh1985 » Thu Aug 22, 2019 11:37 am

Aw that's great thankyou! I only bought the bulb last week so its brand new and yeah it's a T8, il get a reflector and move it a bit further over asap, thanks, kayleigh.
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Re: UVB - NEED HELP

Postby Drache613 » Thu Aug 22, 2019 4:11 pm

Moved by Moderator from General to Enclosures
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Re: UVB - NEED HELP

Postby kingofnobbys » Thu Aug 22, 2019 10:40 pm

I agree with Cooper
>> invest in a slip on polished metal focusing reflector , will effectively double the UV flux at the basking spot and elsewhere in the tank in an instant
>> move the fitting so it's directly overtop the basking spot

I'd also suggest if the the t8 tube is only a 5% or 6% UVB tube, return and exchange for a 10% or 12%UVB t8 tube since it's so new.
Aim is 160 to 200 microW UVB / sq.cm at the basking spot.
See this for how to work out distance from the tube to the basking spot :
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ie aiming for the t8 12% UVB tube with reflector to be 7 inches from the basking spot.
No reflector, need the t8 12% uvb tube to be about 4 inches from the tube.
No reflector , 5 or 6% UVB t8 tube , 2 inches. With reflector 4 inches.
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Re: UVB - NEED HELP

Postby Kayleigh1985 » Fri Aug 23, 2019 12:06 am

Aw great thanks alot that's really helpful. Kayleigh
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