i grow chronic video questions

in this video

[video=youtube;vXKarPRyPCM]http://www.youtube.com/watch?v=vXKarPRyPCM[/video]

he claims he grows a quarter pound every 2 months, does he mean per plant?
i watched the whole thing and he never says per plant, a quarter pound from 2 hydro plants seems pretty shitty, i saw one guys grow log who got 7 ounces from one plant in pretty much the same way.

also he uses a co2 cannister, can you survive without using this? is looks like a lot of hassle.

finally how would you scale up what he is doing, say if i wanted 16-32 plants, do i just do 2 per light or is there a better way.

tanks
 
i think his whole deal is that his system will give you consistant results. while mabye not great results, you can easily continue to do it this way and get these results... You could do more fairly easily but that would require a working knowledge of growing, which i doubt you have if your setting up your grow room based on what a guy who paint's himself green on youtube told you to.
 
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