Bulbs will loose the max lumen output over time, its not really an issue unless you need every lumen, If your over kill on lighting dont worry about it. Get a new one when u can afford it.
JackdaWack Reviewed by JackdaWack on . Plant Problem What is your experience level? (first timer, novice, experienced...) dumb novice Your Equipment: .1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 1: 400w hps .2) Distance from tops? 2: ~8 inches .3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) 3: bare bulb Rating: 5