All Living Things brand is rubbish.
See this
viewtopic.php?f=34&t=235611
Go for a minimum of 24W and 10%UVB rating irrespective of the type of UVB compact or tube.
Exo Terra , Zoo Med and Arcadia Reptile Brands are the only brands that have good UV products that are made properly (compacts, MVBs, T8 and T5HO tubes).
Careful though with Zoo Med T5ho tubes if they have gold endcaps …. there have been issues lately - they decay way too fast (since they changed manufacturer and started monkeying about with the phosphors - presumeably to cut costs).
I use 26W UVB200 compacts in a NanoHood in my 120L rearing tubs (basking spot 8 inches from the horizontal mounted compact).
My 100L tubs are 80cm long x 50cm wide x 45cm tall.
Currently one tub of my set of 3 in use (housing my water skink), I have my 2 big adult BTs and big beardie girl in home made 4ft tanks , all have 26W UVB200s in nanohoods in them. I'll be retiring the dual nanohoods from the big tanks about Xmas when I use my last 26W UVB200 from my bulk buy.
I find the 26W UVB200s are pretty good PROVIDED your mount them horizontally in hood rather than vertically in a dome …. they perform much like a very short t5HO tube producing a nice wide and long beam that covers my 120L tubs nicely , and covers about 2/3 the 4ft x 2ft tanks per hood.
These are the hoods I refer too :
These are easy to mount under the lid of a tub (only takes 2 hexhead screws) and the reflector is really easy to remove to allow drilling pilot holes for the mounting screws - only held by 4 phillips head screws.
These are the Arcadia Slimline reflector hoods I have ready to be installed
They came as kit including an Arcadia 24W 12%UVB T5HO tube in each (I bought 4 + 4 spare 24W 12%UVB T5ho tubes direct from Arcadia as a bulk buy).
Yes I buy my lights (all of them) in bulk at least 4 per order and usually go direct to the manufacturer or distributer (saves me bother and money and cuts the middleman profit from the equation).
I'm also using 26W UVB200's in NanoHoods in my old homemade 4ft x 2ft W x 1.5ft T timber BT and beardie tanks , have Arcadia 24" slimline hoods with 24W 12%UVB T5ho tubes ready to go when I've used up all my stock of 26W UVB200s.
In a larger tank - T5HO tubes in reflector hoods are the best solution, and they should be 1/2 to 3/4 the length of the tank with one end as close as possible to the basking spot.