you can pull 5 ounces off a plant in a 2 gallon pot. so the roots wont get any bigger . who cares. just water it more often. I have roots growing out of the soil on top roots comeing out of the bottom of the pots poking through the fabric. would that be considered root bound ? who cares I water the shit out of them there happy. plants roots out grow the pots a bit. that's fine. I have seen a 7 foot tall plant in a quart of soil ! It was still happy.