Need help diagnosing plant problem

I think my grow is coming along pretty well for my first go at it. All but two plants look very happy. The 4 larger plants are re-vegged clones. Two of them are diesel and two are strawberry cough. I planted them in my FF ocean forest, light warrior, perlite & dolomite lime mix about 2 weeks ago. I'm still using my water meter to make sure I'm not over or under watering them. The strawberry cough looks really good, I think, and they have grown 1.5 inches in the last 3 days. The diesel on the other hand has some yellowing. I first noticed the yellowing the beginning of the week so thought maybe they were hungry and gave them 1/4 strength FF nute. The yellow seems to be a little worse. Can you guys help a girl out here and let me know what you think the these two plants need?
http://i4.photobucket.com/albums/y126/michelebrake/IMG_1360.jpg
http://i4.photobucket.com/albums/y126/michelebrake/IMG_1359.jpg
This is the strawberry cough which I think looks happy
http://i4.photobucket.com/albums/y126/michelebrake/IMG_1358.jpg
And the baby's which I think I can say are officially out of the seedling stage and into veg
http://i4.photobucket.com/albums/y126/michelebrake/IMG_1364.jpg
http://i4.photobucket.com/albums/y126/michelebrake/IMG_1366.jpg
Second question, when taking a clone from a re vegged clone, do I want to cut from the new, re vegged growth or the older growth? And how much longer do you think my current clones need to veg before flowering?
Any and all help would be greatly appreciated. I have to admit I am amazed at how stinky these little plants are, I can't image what the odor is going to be like when they flower. Hubby is working on carbon filters!

SSP said:

Can you guys help a girl out here and let me know what you think the these two plants need?

Click to expand...

if you've only fed once then I think that's your problem, they're starving.
You clone from new growth, it roots the easiest.
Your ready to flower now.

Ok, so more nutes for the yellowing-I thought they looked hungry but since they got a little more yellow after the one 1/4 strength feeding I did give them, I wasn't sure!

Any other opinions/suggestions?