I have searched the web and noticed that you are the guy to ask about indoor lighting for cannabis horticulture. My question is rather simple, I think: In terms of lumens, what light output do I need ...

Hi Nico, I have a three-plant space where I am using a 400-watt HPS bulb. The lamp unit also came with a 400-watt MH bulb. Would this MH bulb be more suited for flowering? Thanks for your advice, love ...