My goal is 100's next year. I started mid June outdoors with clones so I went with 10 figuring starting so late there was no way the roots would fill the pot.... Wrong. Just like JJ, it's all one pot of roots now and the dirt was consumed so it seems.
I'd like to also figure out how to water them better I'm doing 3 gallons per day now just to keep them from drooping all over. I assume with 100 gallons, assuming you give them a good fill, can easily go days without watering. This everyday shit walking from pot to pot with a watering bucket sucks!