They are fed water. They are approximately 8 weeks old. They could have been this size by 6 weeks, I think, but I screwed up my schedule and couldn't put them under the 600 until 2 days ago. In the last two days they've grown considerably for such a short period.
At any rate, the pots are made by rootmaker, the soil is made by kindsoil.com, the risers are from my hydro shop.