No no Dr.FeelGood, by all means. Please dont mistake my posts for disbelief. I just want to make sure i understand. I have seen people state that the have stuff like 40K and all that. I read somewhere one here that max lumens beneficial was like 4,000 lumens per plant. And that 3,000 lumens was good. Please to enlighten me? what does MH bulb stand for?