I pulled 4+ dried ounces out of a four-foot tall C99xNL (better yielder than a straight C99) ... I vegged to about 24" tall, before flipping to 12/12, and it doubled in height ... too many variables on yield, rootball size, available light, etc., ... you are already taking a typically 8-15 foot plant, and squeezing it into an indoor environment ... you can only cheat a plant out of so much natural environment, and then the results suffer ... good luck :smokin: