I grew for years under fluorescent tubes and 8"-10" clay pots ... those would be just under a gallon, my guess ... I grew 5-footers in those, but pretty much 'popcorn' buds ... top-quality, but small buds ... I didn't know about topping or LST in those days, either ... with those practices, you can actually get nice buds, nowadays ... it will keep you going for awhile, anyway ... :smokin: