Length of UVB Fixture

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Length of UVB Fixture

Postby ComicBookMama » Wed Aug 21, 2019 11:51 am

What size fixture should I be looking for in a UVB fluorescent fixture for a 40B tank? I can find plenty of inexpensive 24” fixtures, but can’t find a 36” for under $60; does the UVB have to run the full length of the tank?

Thanks!

Chris
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Re: Length of UVB Fixture

Postby claudiusx » Wed Aug 21, 2019 12:02 pm

Hi chris,

It's better for the tube not to run the full length.

Are you going to be going with the t8 or the HO?

Either way, the 22/24" would be best :)

-Brandon
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Re: Length of UVB Fixture

Postby ComicBookMama » Wed Aug 21, 2019 12:12 pm

claudiusx wrote:Hi chris,

It's better for the tube not to run the full length.

Are you going to be going with the t8 or the HO?

Either way, the 22/24" would be best :)

-Brandon


Thanks, Brandon... I’m still trying to get a fix on the difference between the T8 and the HO. What would you recommend?

Chris :)
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Re: Length of UVB Fixture

Postby claudiusx » Wed Aug 21, 2019 12:15 pm

It all depends really on how you set the rest of your tank up.

The t8 needs to be 6-8 inches from the basking spot, unobstructed. So not on the mesh.

A t5 HO can be on top of the mesh since it's a much stronger output. In a 40g breeder you wont really have the height space to mount it inside as the t5 HOs will be too close. T5s should be 15"~ from the basking surface.

So to put it simply, get the t8 if you're going to be mounting it inside the tank.
Get the t5 HO if you will be placing it ontop of the mesh. :)

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Re: Length of UVB Fixture

Postby MrSpectrum » Wed Aug 21, 2019 1:31 pm

It confused the heck out of me at first, until I studied the charts on Reptisun's site: https://zoomed.com/wp-content/uploads/Choosing-Correct-UVB-Lamp-2018-07.pdf (PDF)

Counterintuitively (to me, anyway, until Brandon splained me), the thinner T5 bulb is stronger (more powerful?) than the larger dia. T8 bulb. (Different Tech)
If you study the charts carefully for your tank & situation, it should become apparent which is the best choice for you.
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Re: Length of UVB Fixture

Postby ComicBookMama » Wed Aug 21, 2019 5:52 pm

claudiusx wrote:A t5 HO can be on top of the mesh since it's a much stronger output. In a 40g breeder you wont really have the height space to mount it inside as the t5 HOs will be too close. T5s should be 15"~ from the basking surface.

So to put it simply, get the t8 if you're going to be mounting it inside the tank.
Get the t5 HO if you will be placing it ontop of the mesh. :)


I think I'll go with the HO, then... I prefer not to have to mount a fixture inside the tank. Thanks for the tips! One more question: if the HO needs to be about 15" above the basking area, does that mean I shouldn't put a climbing branch in the tank? Would that put my beardie too close to the HO?

-Chris :)
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Re: Length of UVB Fixture

Postby claudiusx » Wed Aug 21, 2019 6:26 pm

That recommendation is if the bulb is unobstructed. So if it's on the mesh the dragon will need to be closer. Around 8 inches or so at the basking spot would be good :)

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Re: Length of UVB Fixture

Postby ComicBookMama » Thu Aug 22, 2019 7:49 am

claudiusx wrote:That recommendation is if the bulb is unobstructed. So if it's on the mesh the dragon will need to be closer. Around 8 inches or so at the basking spot would be good :)


Thanks so much, Brandon! I'm getting my tank today and will be getting it set up and ready for my beardie, hopefully tomorrow or Saturday!

Best wishes,
Chris
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Re: Length of UVB Fixture

Postby claudiusx » Thu Aug 22, 2019 8:37 am

Great how exciting! :D

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