Sprout problem. First 2 leaves - yellow. Whaa?

I'm seeing a bit of problems with my sprout

It's first 2 leaves are becoming yellowish

Initially this guy sprouted in a nute rich bubble system, now I laid off on the nutes and gave it more light

It's stem got crippled a bit before, I'm afraid it just got torn off when transplanting

Other than that, what might be the problem?

I'm not monitoring PH levels yet

The lights are on 24/7 - 2 18W CFLs right on top of the sprouts

There is an air stone under each plant, the pots are submerged

And the 2 dead sprouts on top had similar syndromes, turned out they were indeed torn out.. they probably won't make it.

Aha, so that guys stem also broke off. Fuck, do I hate it.

Now I have only 1 healthy blue cheese left and 2 skunks

Hopefully 2 more cheeses sprout sometime soon

take clones, sex em, if they are female keep your healthy plants as mothers

I want bud for a party in July, so I think I'll grow the skunks, take clones from all of them (mark each) and flower the plants. Keep the clones from the girls.