Help w/Plant Height (Pics)

Hey, guys.
I'm on my second crop of these new seeds now (Blueberry and PowerPlant). I'm having a lot of problem with plant height and not much density. Here's the specs.

Blueberry/PowerPlant mix
1000 watt liquid-cooled lights 12 inches from plants
2 weeks veg time
40 gallon res w/Canna products
Change res once a week
Water 3 times a day for 15 minutes
No leach
No CO2
2 separate fans blowing on each box constantly (one of my friend's was worried they weren't getting enough air)
Temperature is 80 degrees
Humidity is 65%
Not much pruning (bottom 6 inches are removed)

Both pics were taken today. I just transferred from veg to bloom (1st pic) and haven't pruned anything yet. The 2nd pic is the left side. They've been in there exactly 1 month and I pruned the bottom 6 inches.

Any help is appreciated.

I think your pots are way too small, this won't allow them to fatten up much. they do look good though

Is this "root bound"? Plants can't expand their roots enough so they grow up instead of out?

I think so, I tend to find that my plants generally grow in accordance with my pot size and shape.
When you harvest that lot, have a look at the roots, I'm sure you'll see that are root bound.

Thanks, Reiss.

Check these out for height control and side growth promotion. I'm using it. Works.
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