How Are We Doin'?

Hey, so my buddies and I just embarked on our first grow adventure not too long ago. We built a Bubbleponics system from scratch and got some Liquid Earth nutrients and some feminized Brainstorm seeds. I've been lurking on here for a little while now just to find basic info and answers and now that they're a little over 4 weeks with nutes I just wanted to post a pic to see how we're doing. (Bare with the crappy cell phone camera.)



I'm just tryin' to figure out how much longer til we bud 'em. Any other comments and criticism works too. Thanks guys!
 
They look nice and healthy. What kinda light you using?
Just four 2-foot florescent bulbs in a fixture. I was looking into lumens and realized its a little less than what's normally needed, but they seem real healthy and I figured if they're doing fine why change anything. Plus they put out no heat and use little energy and the less money the better with us haha.
 
Lighting's above you and yeah my buddies and I were thinking one more week in veg and then we start using the bloom nutes and the light time change.
 
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