Cool I think the stem is to thick for them to fall over, I sprayed with water earlier and they seemed funny. One is slightly yellower than the others, I'm wondering if that means its time to add a low dose of nutes to that one. Next watering they'll be old enough for nutes so I'll add a small dose of fish fertilizer.
EDIT: Okay just looked at the pics in the growfaq and if it is anything it may be nitrogen, thats what it resembles the most but none of the other plants have it. Maybe I'll just add a little nitrogen to it when the lights cut off and see how its doing in about 2-3 days. I think worse case scenario I may get a little nute burn but I'll be using no where near the recommended dosage.