I've done something similar using self-ballasted 175w Mercury Vapor bulbs for uv enhancement. They did seem to frost up nicely. Unfortunately the bulbs didn't last long and put out some serious heat. Got'em off Ebay 4 for $35 or so, if I recall correctly. Ended up using 10000k CFLs near the end with good results but not as pronounced as the MV bulbs. Probably not enough wattage. A 250MH might be the way to go. From what I'm learning now I think a couple halogens for the last few days can help to ripen your trics too.
scott9116 Reviewed by scott9116 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