Why are they streched? Not enough Vegging?

Got about 54 plants going right now, about two weeks from harvest. Seven of the clones were only vegged for a week and they look terrible - I'm looking at pulling about 12-18 grams off each one, while literally every other plant is looking like 20+.

I did nothing different with these clones at all, but they are streched. From my experience in the past, if they get to the proper height, then you vegged for long enough but I'm just not seeing it with these Sour D's.

They are tall as hell, just as tall as the other ones, but streched as hell and not looking that good at all. They were under a 600 watt lamp, and others were under 1000s but I keep the 600 nice and close to them.

What gives?

Could be heat- is the 600 not air cooled?

All my lights are air-cooled.

Perhaps the bulb in the 600 is going bad? I'm clueless here.

I'm going to pull at least double off most of the other Disels... though they are from a different source I've already done a full cycle of the same Diesels that are currently giving me a problem - everything worked out great last time.

I do still have two weeks to go, but I'm positive they are going to end up extremely well. Oh well, at least there's only seven of them.

P.S Hi Stinky! How are you!? Sorry I haven't been in touch.

I haven't even checked my disposable email address in a long time, have you sent me any emails?

How's life?

It's good, busy, rewarding in many ways, frustrating in others. I don't think I've emailed ya recently though. Things good out your way? Looking forward to spring training as much as I am? Sox are gonna be NASTY again this year.