Gas - I had them in a small (2'x2') box with about 450 true watts of cfl's. One week ago I moved her into a new grow cabinet under 400w MH. But at the same time I put the plants on pure H2O to get them ready for cutting clones.

The photo on the right I took just now - the other is from 19 May. There's been a lot of growth in just 3 weeks, especially when you consider that 1 week of that is without nutes.

So tomorrow I cut clones and that's when the actual crop starts. Yahoooo!