Yields like this are relativly easy too get. Just get your climate in order, use GOOD soil (plagron soil mixtures), use decent lighting (HPS) and a good nutrient mix specially developed for cannabis plants (I use canna or Plagron). o yeah and one more...

don't fuck around too much with all kinds of additives that should do wonders too your plants. In the end there are only a few additives that really garantee a bigger yeild. And those are:

Mycorhizza fungi spores (symbiot) i.e AN pirahna
Bacterial mix (symbiot and bac culture) i.e. AN Voodoo Juice
PK-13/14
Enzymes
CO²

What lots of people don't understand is that when you don't have a decent basic setup (climate, lights an stuff) you can use all the additives in the world but you'll never have a good yield.
britewire Reviewed by britewire on . 6x PowerPlant on soil (1200W) I just started out again with 12 PP in my cabinette. I´ll make my choice of 6 of them that I´ll bloom. I won´t give them any nutrient during VEG with the exception of root nutrient and mycorhizza fungi. They´re in VEG for 3 days now. I´ll have a 2 week VEG. Rating: 5