2 gallon is fine, you will just find yourself having to water a little more near the last 3-4 weeks. i hear rumors of 2-3 ounces out of a bagseeded 2 gal girl.

people have harvested non root bound 2 galloners... of course they didn't veg too long.

some use the size of the container to control size as well.

i will definitely agree with, more is better, but that assumes you have the space, and that, honestly, your setup will be optimized with larger containers, and plants.
HighTillIDie Reviewed by HighTillIDie on . grow buckets Will 2 Gallon buckets be sufficient to grow a plant indoors in a closet it says they work for plants up to 18 inches... but i thought maybe i could go a little bigger. or will the root space significantly reduce my yield? Rating: 5