"How can you get more UVB light to your plants? Certainly it's true that MH lamps emit more UVB light than HPS lamps. Still the amount that MH lamps emit is small. In fact, many manufacturers use UVB shielding glass to filter out most of the UVB that's produced. The UVB light the plant receives from an MH lamp does increase the plant's potency slightly at the cost of yield, but there are better ways to introduce UVB light into the grow room. They include reptile lights, which emit about 10% UVB, and tanning lamps.

The problem with using these lamps is that they are associated with increased number of cancers and many other problems. They should not be on when you are in the grow room."

Ed Rosenthal - cannabis culture magaize."


I want a UV lamp real bad but I've gotta do more research on how to protect myself. Just as I thought, this stuff is dangerous.


Thanks for the link bKonz

Also as a sidebar, an interesting comment Ed made in the article is that mfg's of lamps create UV shields to limit the amount of UV which escapes from the lamp. hmmmm, so are some bulbs better than others? And, are these "better bulbs" actually not better? If you have one of these 'uv' emitting bulbs, are you placing yourself in danger?

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