I know a 1000w light will yield the same no matter if there is 10 plants or 5 plants. My question is... 600w HPS veg for 4 weeks: 9 plants vs 4 plants. At the end of the 4 weeks... will the 4 plants be larger than the 9 plants?
I would say 4 with larger pots, 9 would be difficult to cover with a 600w First to third grow. From beginner to novice lol.