R ro_nicu Non-member Jul 28, 2014 #21 I'm not sure how often you would have to change the bulbs on the MH/T5 but the LED will last a 5 years without loosing much output at 50% duty cycle.
I'm not sure how often you would have to change the bulbs on the MH/T5 but the LED will last a 5 years without loosing much output at 50% duty cycle.
