This is only my second try at a stadium style scrog, and as mentioned above, it is not done right. My first one I lost most of my plants due to a ventalation problem. My second I budded early. My wife won't let me buy anything to smoke since I spent all this money on the set up.

When I tried a flat sceen, the center plants grew much better and taller, and the overall shape of the canopy was shaped like a christmas tree, with the tip pointing at the center of the light. This didn't seem good to me because the outside plants didn't get enough light. It seemed like the yield could be improved if I could get light to the outside plants too. I started poking around and found out about the stadium concept. The theory is that the light intensity is shaped like a ball under HID light, where as with flouros it's mostly flat. A stadium screen keeps more surface area of the scrog in similar light intensities, thus making more of the plants grow and produce the same, and hopefully increasing the yield.

You also get slightly more surface area overall than with a flat screen. I don't know without getting out my calculator and looking up some area formulas, but I'd guess maybe 10 to 20 percent more surface area.

If I do have any shorter plants I put them in the center. Otherwise I just keep placing the branches to fill in areas that need it. Of course the center plants try to come through the screen first, but I don't let them until all areas are ready to come through (at least that is how it's done when it's done right). When I do it the next time I plan to have about 3 times more buds poking up through, mostly filling the screen with bud sites. I think I will try making all the branches grow in a clockwise manner, or something more organized.

Not sure, still figuring it all out. I guess maybe double the yield of no screen, and 50 to 100 percent more than a flat screen. At least, I hope. We'll see.

I'll post results.