OTE="slinkysaurus, post: 11421664, member: 896717"]I replace my bulbs every grow + 1 veg. Overkill? Possibly. For the sake of a £30 part tho, I'm not going to quibble replacing it.
Either way, it's all being replaced with a 1000w system and a Magnum/Dominator XXXL 6'' vented hood in the next...