sorry to derail but what would you guys expect from say a sativa dominate strain under a 600w HPS with about 3gallonz of soil? I've heard with HID a good rule of thumb is to assume .5 per watt each plant, any words? Also, is it true that 1gallon of soil per foot of plant is the golden rule? So in theory 3 gallon bags wouldnt produce a finished 4 footer without loosing out on yield due to root boundness? Thanks!