Yodaweed
Well-Known Member
UV light is already present in your garden, but it's being blocked by the special glass your bulb is made of. Lamp manufacturers must use this type of glass by law because UV light can cause skin cancer when humans are overexposed. You wouldn't want everyone getting cancer from street lights would you? You can increase the amount of UV getting to your cannabis by mixing metal halide bulbs into your bloom room and leaving the glass off your air-cooled hoods. But a better and safer way is to buy and install cheap fluorescent UV lights.
Remember, UV light causes stress to the plant, so put the fluorescents on timers and only have them on for part of the light cycle. Having them on for fifteen minutes of every hour should do the trick. The only downside of this whole process is that yields go down slightly. The plant has to reroute resources and undergoes some physical damage from the UV. As long as you don't overdo the UV the increase in quality is well worth the decrease in yield.
http://forums.strainhunters.com/topic/4951-how-does-uv-light-effect-marijuana-plants/
just google cannabis uv light and theres tons of topics, maybe you need to do some research because I did mine, been running an 18% UV-B light for 3 years now.
. I will say this though, my plants accidentally got 1.5 hours of straight uvb supplemental exposure, 3 feet away, and I have regretted it. It stressed my plants and 2 may not survive. This is only in reference to pure uv bulbs by agromax.
