Also the the light fixture itself is a 18” is that too small? Cause right now I have the heat bulb in a casing that’s supposed to hold the UVB and the heat but I only have the heat bulb in it and the UVB in the Zilla fixture so if I buy a bigger LED light I’m going to have to buy a different casing for the heat bulb. If that makes sense, also is it an urgent matter to buy a new bulb because I will if I have to of course but if it’s not hurting him I would love to hold off for a few months since I just bought the new UVB fixture and bulb 2 months ago. He goes outside a lot too so he gets UV rays there as well.