I know a little about this, probably like everyone else, I've read a bit on it.
In fact, this is exactly what NGT and I were talking about a while back, except tailored to soil, I think you could get by with 6" square pots using soil, which would give you 4 plants per sq ft.
You know, from where I sit, the square pots are hard to find. I may go to home depot today and look. I know htg dosent have them.
I think I messed up by not taking cuttings earlier in my grow, so now i have to do another grow, and take cuttings earlier, so I can maintain a mother.
I wonder using this method, and a 430 watt hps if I could maintain 16 plants? 4 plants at each interval, and I could harvest a qp every two weeks?
Of course if that works, I'd end up needing to improve on it too! lol
Peace.