Gee. I thought it depended on the bulb. Some are full spectrum, some are for street lights or security lights, some are for growing indoors, some for aquariums... Most have so many friggin lumens, doubtful spectral bleeding is a problem worth a mention. Especially if results verify it's worthiness.

Perhaps you should get to the point. Explain why we should be as concerned as you seem to be...? I grow killer buds with my 1000w HPS, and have found no lighting system for indoor growing that even comes close to the performance of an HPS system. I'd love to see an example of this 'photodamage' you refered to. I'd also like you to look-up the degredation process of CBD to CBN, and it's effects on the psychoactive properties of the THC. Personally, I use the UV light to enhance this degredation further and quicker.

But I'm curious...what do you propose as a "better" choice?
Rusty Trichome Reviewed by Rusty Trichome on . Another reason to move away from HPS As it turns out, photodamage has an action spectra. It looks a lot like an HPS plus a UV light to me.... http://www.plantphysiol.org/cgi/reprint/153/3/988.pdf Rating: 5