so why would people who grow vegitables or other sunloving plants with HID's use the method your talking about? It doesnt take a genious to think of your idea. You want to tie down your crop and see what happens when you put the lamp upside down?
Ive personally havn't heard of this except for that stupid ad in high times that has that carocell/vertical light thing. I cant think of a bigger waste of money. I just wouldnt want you to ruin your crop trying a bunk idea just because no one know anything, supposedly.
But please correct me if im wrong. Have you tried searching the forums yet? I know Ive seen shit about growing upside down but have never bothered with the idea just because the simple basics of plant growth and maintaining a healthy crop, i dont have any interest in subverting that process. I would think that if it was efficacious in any way, even to cannabis you would know of it. thats just my guess.