I ran 10 gallon pots of supersoil, upped from five gallons. 7 gallons is the apparent minimum for supersoil, and I got a good deal at 2$ a pot so why not? 2 weeks vegged in a veg room, then 1 week veg in the pots. Root balls took up the whole pot but weren't root bound, this is with 9 weeks flower. Since I pre-veg, my veg time didn't really go up, but I lowered my plant count and the larger pots could go longer without water, while my yield went up a bit too.