Is this the right size uvb for his tank?

[Ann404]

We have a t5 HO reptisun 10 uvb that's only 22inches (fixture 24"). We are working on his new, bigger cage. And would like to know if this will be enough uvb in his new cage that is 5ft long x 2ft wide? There will be other lights in there for brightness, only worried about his uvb exposure.

 

[KarrieRee]

I would say yes it will work -- but I haft to ask how tall is the tank - some may say to get a longer one but I dont know why the 24" would not work - my tank is 4ft long and the 24" works fine - the dragon will sit where he needs to sit for the lights he needs - its the height of the fixture you need it to be correct - for a T 5 it needs to be 12-15 inches from basking decor inside the tank -
Karrie

 

[MrSpectrum]

FWIW, I had to get up to within 9" (Reptisun T5, 10.0 with reflector) to get a UVI of 3.5 at the midpoint of the bulb (quite a bit less at the ends). It's possible I have one of the wonky reflectors, or a weaker bulb. We wound up getting 3 bulbs, and testing them with a Solarmeter (after they'd warmed up), got different values (± 2.0 UVI) for each one.

These are just my own results. Hopefully others' are more in line with published guidelines.

 

[Ann404]

The cage is tall. About 24inches. It has a hinged topper to hide the wires. So i can put the uvb on a chain so it can drop down. But is that 12 inches to the platform or dragons head hieght?

 

[KarrieRee]

His basking decor --
Karrie