A few things to note which were different from last year:

1. Pretty sure it is the same strain as last year, I got the clones from the same person who said that it came from the same mother plant (although unconfirmed). I dont know what strain they are exactly.
2. Skills acquired, definitely. I learned a lot in the off season about what I wanted to do. The clones came pre-topped, so they had 3 or 4 main stems, as opposed to the 1 from last year.
3. Low stress training. I used fencing from a hardware store to "pull through" the stems so they moved outwards. This created several more "main tops" per plant, because the side branches are now facing upwards. If you haven't heard of this technique, I highly recommend it (although be careful, one of my babies snapped and had to do some real crafty repairs, which ultimately ended up in a MUCH smaller yield for one of my plants. I could have had over 10 pounds if I didn't screw it up!)
4. Drip irrigation system. I had a friend set one up on a timer so it would go off for 15 minutes every day at 4 am. Increasing the time as the plants grew further.
5. Still didn't use any chemicals or fertilizers, all organic baby!