I think the bigger yields can be achieved with bigger plants.. one large plant can easily out yield a bunch of little ones... think about it one stalk that holds many side arms in a much compacted space compared to having a bunch of little dwarfs....I've seen it done... I myself have yield 2.5+ under 1k and that was my record 4 plants per light in soiless medium, I've heard of people doing multiple lights getting a constant 3 on hydro... and a record of 6lb under one light in the middle of everything.... sensi star was the strain they did that with.
my biggest yielder was Bubbleberry of top notch quality herb.
my biggest yielder was Bubbleberry of top notch quality herb.