AG,
This was a fun journey to watch. This journal will be read by many. Your 2 x 4 tent is a popular way to go for people who want to dabble and there are thousands of them. Speaking of "just starting out". If I had gotten over 5 zips from my first plant I would have been ecstatic. That is a super yield, plus don't forget you got some off the bagseed plant too. Add that and you're well over 6 zips.
Think about it this way... I'm averaging 16 zips in a 4x4 area, under 600W, so lets say I only had 1/2 that space, that would be 8 zips in a 2 x 4 area (roughly 224grams / 600 = .37gpw). For you, take 6zips (168grams / 400W = .42gpw). You did better! If you had a 600W lamp, I'm confident you would have been well into 8 zips with no problem. And no I don't count the additional CFL bulbs in there ;-) They don't compare, lumen-wise.
For the readers and subscribers here, let me be clear. I'm not saying you should base your "success" on gpw. It's kind of silly in the grand scheme of things. Base your success on oz per plant (if you adhere to a plant count limit) or oz per square ft, if you have no limit. Real estate is much harder to come by than light.
Here's why. Lets say you would have had a 600w light, and got 8zips. So, think about how much you have to donate for 2 zips, and compare that to the electricity. To calculate, take your cost of electricity x watts/1000 x hours per day. Calculate what it would have cost to run a 600w bulb (200 more watts): lets say electricity is $.07 x 200/1000 x 12 = .168 cents per day x 70 days = $12. It would have cost ~$12 more, to produce another 4 ben franklins worth (give or take).
I may have confused you by now, but the moral of the story is... 6zips with only 400W of light in a 2 x 4 space, is amazing.
This was a fun journey to watch. This journal will be read by many. Your 2 x 4 tent is a popular way to go for people who want to dabble and there are thousands of them. Speaking of "just starting out". If I had gotten over 5 zips from my first plant I would have been ecstatic. That is a super yield, plus don't forget you got some off the bagseed plant too. Add that and you're well over 6 zips.
Think about it this way... I'm averaging 16 zips in a 4x4 area, under 600W, so lets say I only had 1/2 that space, that would be 8 zips in a 2 x 4 area (roughly 224grams / 600 = .37gpw). For you, take 6zips (168grams / 400W = .42gpw). You did better! If you had a 600W lamp, I'm confident you would have been well into 8 zips with no problem. And no I don't count the additional CFL bulbs in there ;-) They don't compare, lumen-wise.
For the readers and subscribers here, let me be clear. I'm not saying you should base your "success" on gpw. It's kind of silly in the grand scheme of things. Base your success on oz per plant (if you adhere to a plant count limit) or oz per square ft, if you have no limit. Real estate is much harder to come by than light.
Here's why. Lets say you would have had a 600w light, and got 8zips. So, think about how much you have to donate for 2 zips, and compare that to the electricity. To calculate, take your cost of electricity x watts/1000 x hours per day. Calculate what it would have cost to run a 600w bulb (200 more watts): lets say electricity is $.07 x 200/1000 x 12 = .168 cents per day x 70 days = $12. It would have cost ~$12 more, to produce another 4 ben franklins worth (give or take).
I may have confused you by now, but the moral of the story is... 6zips with only 400W of light in a 2 x 4 space, is amazing.
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STAY TUNED!!
your work is going to be a massive learning tool for me in my up coming adventures. Your always a real aid when called upon so many thanks AG. Also your future plans have me grinning from ear to ear buddy! Many congrats on a great grow and a bountiful outcome! 
