Recently one of my 4ft Tropic suns from Quanta Pro broke. I emailed Luca and within 12 hours he called my phone and he was able to help me out with my lighting issues. I don't have any Quanta lights on my reef tank (they are over my terrariums and plant grow outs), but I cannot recommend the Quanta products enough. The research, quality build and amazing customer service from Luca is unmatched. If you are looking for new lights in the future I definitely recommend getting some.