GibsonIconoclast
Active Member
I remember reading a thread somewhere on another site about the effect of UV light on plants. The conclusion was basicaly that MH light, because it has more light in the UV spectrum, will produce more THC in an effort to protect itself from the UV rays. That leads to a diferent high and doesn't give the munchies as much. It seems to be that increased UV light degrades THC into CBN causing the trichomes to change color. So the UV light must be what degrades THC to CBN because if it were just any wavelength of light then we would hear about plants grown under excessive light appearing to have shorter flowering times because the plant wouldn't be able to produce THC as fast as it was converted to CBN making the trichomes brown and achieving the desired balance of cannabinoids before the typical flowering period was over.
Why is it important?
Well if UV light is the big factor in how quickly the plants achieve the desired trichome color ratio then we can use it to the advantage of the grower for a bigger yield. We can reduce UV rays with UV filters, effectively delaying the breakdown of THC to CBN and we can grow longer and yield much more bud. If you want to make the trichomes change color faster then you can use a light with lots of UV rays to degrade THC faster.
(really old CFLs release a lot of UV rays because the phosphorus inside the bulb is getting old and degrading, the phosphorus is the white powder inside and it converts UV light into visible, when a bulb is going bad the spectrum turns from yellow to blue and then to violet). Because MH bulbs oviously put out a lot of UV rays, and HPS lights put out very few so there should be a difference in flowering time or yield. I recommend people who don't know anything about specific cannabinoids and their effects to read up on it, wikipedia has a lot of info about them.
Sorry to make it seem so complicated but I needed to explain all that crap to ask: Do you guys notice a difference in the flowering period, or the high from weed grown under metal MH lights and HPS lights, assuming its the same wattage?
Why is it important?
Well if UV light is the big factor in how quickly the plants achieve the desired trichome color ratio then we can use it to the advantage of the grower for a bigger yield. We can reduce UV rays with UV filters, effectively delaying the breakdown of THC to CBN and we can grow longer and yield much more bud. If you want to make the trichomes change color faster then you can use a light with lots of UV rays to degrade THC faster.
(really old CFLs release a lot of UV rays because the phosphorus inside the bulb is getting old and degrading, the phosphorus is the white powder inside and it converts UV light into visible, when a bulb is going bad the spectrum turns from yellow to blue and then to violet). Because MH bulbs oviously put out a lot of UV rays, and HPS lights put out very few so there should be a difference in flowering time or yield. I recommend people who don't know anything about specific cannabinoids and their effects to read up on it, wikipedia has a lot of info about them.
Sorry to make it seem so complicated but I needed to explain all that crap to ask: Do you guys notice a difference in the flowering period, or the high from weed grown under metal MH lights and HPS lights, assuming its the same wattage?
