etclement
Established Member
I'm just using Phillips leds for my 4 foot fixture and Arcadia for Uvb. I'm assuming by 48x25x25 you mean HWL? If so you might not want to use led. If the Uvb bulb doesn't produce heat Iwould go with a fluorescent instead of led for more heat. Whatever bulb you get just make sure it runs at a light temp of 5000 kelvin, which is daylight.