There are some benefits to scrogging and a few setbacks to certain situations. I run a scrog in a small 2x2 tent with a 400. I do three plants in five gallons and I remove all the bud sites below the screen. I flower at 18 inches where I put the screen. This method really works best when running only one strain. Ialso found it can be difficult to reach all the plants and perform proper maintenance if the scrog is.more than three plants deep. It is great for maximizing a small space and essentially compacting your canopy into you light sweet spot for optimal yields. A scrog also is very good for structural support later in flower. Air flow is key and heavy pruning is sometimes necessary one should not be scared to mold the plants even if it mean removing large lower branches.