Room for more!?

[chop'n'toke]

How many plants,medium size, 60cm tall can you grow under a 400wt in a room 30''x20'' (yes that is inches!), a friend recons he can grow 10 in that size, as long as you keep them trim and watch the watering close as the pots have to be small!
I would like someone to challenge his answer

[indica4damuchzzz]

I don't know bro. Ten seems like a lot. You would really have to watch the strain height, and do your home work. You really don't want to try to use small pots. The better the roots the better the buds. One of my plants are about 4.5 feet tall and a good 4 foot from side to side. I would say more like four plants in the space. Just my opinion though.