They now live in a crawlspace thats pretty similar to the one they originally lived in, 4x2x3.5 We just took them out into the kitchen for yearbook pics.
There are 5 healthy plants and 2 that are a waste. The 5 good ones are taking up about half of the available grow space right now so we've decided to switch the lighting to 12/12, along with that switch, a slight change in the lighting configuration. I now have 4 48" 2700k fluoros centered overhead and 2 48" cool white fluoros on each side of them. I hear that the cool white end of the spectrum promotes bushyness, so I put those bulbs where they'd get to the lower branches, and the warmer bulbs on the top.