One small point about MH lamp bulbs: they can run anywhere from 3000K to 6500K or higher.

HPS lamp bulbs generally are 2100-2700K..unless they have blue added..like Hortilux

I wish peeps talking about MH bulbs would give the Kelvin temp...because of the wide temp range available on the market. I assume; but, don't know?...that the higher MH kelvin temp range (5000-6500k)...puts out more UV rays?

...or the 3000-4500k does?...maryjane; likes the white light..:thumbsup:
Dutch Pimp Reviewed by Dutch Pimp on . UVb-UVa I did the best I could to try to understand the threads regarding the topic, but could not assimilate via the written word. Stopped in my local horti- shop yesterday and asked. Interesting theorys. I was/am considering adding another light fixture to my flower room. Would using a MH in one end of the flower area and moving the plants that are closest to finishing under that light improve my yield and trichome content? Currently the flower area is a 1000 W HPS. If you did this what Rating: 5