Is what I want to know is how long do leds last? Not before burning out but before there is a drop in par or spectrum or whatever. I remember in the beginning everyone said they are supposed to last 10+ years. Do leds go bad over time like halides do? A 400w radium needs to be replaced 6 months down the line or your not giving the corals all the light offers, do leds end up doing the same thing?