SCroG stands for 'screen of green'. As the plant grows, you train it under a screen, then a couple of weeks into flowering you let the plants grow past the screen, resulting in hopefully a field of buds that are all bathed in the light, which maximizes your light, as you don't have to worry much about light penetration. You have to be careful not to veg too long though, or you can run into difficulties keeping the plants beneath the screen.

You have the essence of cloning down. The EZ-Cloner is nice because it has a bunch of nozzles that mist the roots of the clones (which is why it works good with cloning gels, as a gel doesn't get misted away easily).

Here's a picture of my flower cabinet from last grow (which was two White Rhino plants and one AK-48 plant). As you can see, I *did* veg too long, and my SCroG screen got totally swamped, and I had to let them grow past it. That's not the normal SCroG plan, but I had no choice, as I had to leave town for a bit and didn't want to flower until I got back home. I ended up fighting to keep those plants from burning on the lights. No complaints though, as I eventually got about a pound out of that. I'm gonna try Blue Mystic this next time, and not veg the plants nearly so long. Heh.