Here's the thing bro... The original article was posted in 2008 from stuff I was doing in 2006. For example, the things we are learning about beneficial bacteria wasn't really known about 10 years ago. I mean we knew about it but you couldn't go down to your local store and buy it and we didn't have a clue about how to use them even if we could. Growing techniques change daily. Success still depends on one core element, genetics.
By far the most important thing is genetics. Genetics is 99% of your success. You can take a clone of OG Kush SFV and grow it in store bought soil with off the shelf nutes and it will be amazing! There are guys around here getting 2lbs. per light using soil and winning awards doing it! Now of course you still need basic knowledge but my point is growing weed is easy if you don't make it hard. One of the things I've learned over the last 10 years if what may be easy for one guy, may be impossible for another. It took me awhile to admit it but I'm a realist not superman.
I've gotten to the point that I tell people if you want to grow with Aero you need to get a chiller for your water. Why? Because chances are if you don't, you'll end up with root rot. In fact if I was still hard core aero I'd be running a sterile res and keep it clear. Then flush the fuck out of it for two weeks. I know guys that do it that way and the bud taste fine. Not as much flavor as organic but great bag appeal, smell, high... Aeroponics is for the guys that drive fast cars. But we all know you don't need a Porsche to get groceries.
The way I've been teaching people the last couple of years is to start them off using soil with Botanicare nutrients. After a few successful grows they either stay with soil or move on to Coco. You don't have issues with coco like you do with aero. The coco acts like air conditioning for your roots so they always stay nice and cool. You can run bennies with coco and never have to worry about root rot. Growth rates are as good if not better than aero. My next grow article will use coco fiber...
Remember...The article is titled "Harvest a pound every three weeks". You should expect techniques and knowledge would change over time. Especially if the original poster (me) refused to stagnate. I'm never going to stop learning and trying new things.
Someday I will hand you guys the most important thing I've ever done in my life. Someday I will hand you the genetics I'm working on right now. I've been working on this for what seems like my whole life. All I can say right now is HOLY SHIT!