- Jan 20, 2005
- Reaction score
awsome room with 1 HPS And 1 MH
.."Mythical" blue?? ..did you learn that in your lab?? The blue spectrum is not mythical. It is also essential to plant growth...any green plant. An HPS has a 'sufficient' amount of the blue spectrum to grow satisfactory. But is preffered for flowering, because it emits more at the red end of the spectrum, which is more beneficial to flowering. MH however, does provide more light in the 'blue' end of the spectrum, and is better/more beneficial for vegetive growth.That adds the mythical blue that seems to help, but doens't really. It's a weed, not an orchid.