budget? 6$ clamp light from home depot is popular with a compact florescent 65k bulb. I use a kessil a 160 , just because I had it from another tank , so why not. Would I go out and buy a 250$ refugium light ....absolutely not! Amazon has a ton of led grow lights that screw into a normal lamp socket that I was looking into , price rang from 14$ to 80$ and the reviews on those are just as wide range. I was looking at this one (Coral Compulsion 14w Par30 LED Refugium/Grow Light) but before I dropped the 70 bucks I figured why not use my kessil.