i have experience. duhh..but not to grow 4 pounds per plant.. who does? thats y i need help. unless you have the experience to grow 4 pounds per plant i guess your very unexperienced aswell
I'm no professional to get that much per plant indoors, but if you actually read his post you can see WHY he got that much.
He used a ton of lights, he had extra regulated C02 in the room, again he had TONS of lights.....he also used a type of hydroponics.
I personally don't use hydroponics, but pretty much when the plants do not have to go stretching/growing their roots in search for nutrients they can put that time and energy into forming buds. This is why hydroponics generally gets more yield than soil.
it's not that hard, he really tells you all you need to know about his grow right there, and :S
You should also try to find out what strain he used....why don't you go search that thread/ask on that thread?
Good Luck