wtf is happening here?

Got 2 plants in my aerogarden, one is a Christmas tree kush - from seed & the second is a clone of some cali skunk.

As you can clearly see One isn't doing so well(the xmas tree) & the clone is raging its life away happily.

They're both on 12/12 at about 2 weeks now.

Any idea whats happening to my christmas tree?
She was very healthy and full of leafy greens just 6 days ago and now shes barley holding on, but still growing.

P.S. Sorry for the low quality shots, bad camera :/

Looks like one of them has bumps on it's stem.. Stem rot maybe?

Wow man I'm not too sure. I don't think its stem rot. I have a touch of stem rot on one of my plants that I am treating right now and it looks white, like mold. That stem is gnarly looking, though. Have you checked the sick plant forum?