Hi I've went from 16 to 9 plants and was going to up size the pots from 6ltr to 13ltr in coco and in 1.2x1.2x2m tent, was having a look in the forum and seen 1 gallon per foot of plant, my height normally about 60 cm so that be about 7.5 liters, I've already got the pots, went with wider but same pot height so to not restrict plant height, what happens if you use to big in coco?