The scrog. Canopy does not need to fill the screen because in the first 2 weeks of 12/12 your plant will shoot up a bit, at this point you will daily thread your plant throug the sceen daily (over under over under). Leaving the coals room to spurt up an all the leafs at the same level getting max exposure, trim any leafs below the canopy as soon as possible because the canopy is now getting all the light.