What UVB fluorescent for an 8 year old red foot tort?

[Ben1233546]

Upgrading my current table to a new one, I've been told a uvb fluorescent tube is better than the normal uvb light I have. So my question is, what sort of uvb fluorescent tube should I get (5.0,10.0 and what length)? And what brand (Currently I'm using equipment from Exo Terra, are they good?). What height should it be from the table, I've been told 30 cm?

 

[ZEROPILOT]

5.0
I use an 18".
But that is only because of my small enclosure (for hatchlings)

 

[Ben1233546]

5.0
I use an 18".
But that is only because of my small enclosure (for hatchlings)

Thanks for the reply. How low is your light from the surface?

 

[ZEROPILOT]

8"
You'll have to ask someone who knows more about lighting to find out the maximum distance