Fastest-developing plant I've seen to date.
She's a bit leggy, but for I've seen plants take a month or more to reach this height and leaf development.
Having a 12/12 schedule 600W sodium lamp is helping, and the increasing temperatures as we head into spring.
No sign of root reaching beyond the (large) rockwool cube, but that's normal. Sometimes it takes several months for them to properly get going in these cold climes.