Gardner Bender 46-421UVB HVY-DTY CABLE TIE UVB 21" (175 LB) 50/BAG

All right, so when it comes to UVB there's several different things that you need to take into consideration. The first is the strength of the UVB and then the second is the type of UVB bulb. So I'm going to start first by discussing UVB strength. There's generally a few different strengths you're gonna see on the market. There's what's called a 2.0, which is reflected here with the natural light, it's a formerly a 2.0 UVB. Then there's a 5.0, which we have here, the 5.0 or the Zoo Med version 5.0. Then there's the 10.0 which you can see here is a Zoo Med 10.0 and Exo Terra has a nice small print 10.0. And then there's the newer, what I call a 15.0 which is just made by Exo Terra right here. So what does all that mean 2.0, 5.0, 10.0, 15.0? What it really means is a UVB penetration depth. So that penetration depth is more important than what it says on the box. Your tropical bulb is a 5.