k. so my "good plant" is now up to 5 sets of true leaves, but 3 are just starting and still very small, so i'll be holding off on the fert for a little while yet. however, my other, slower, plants has met...i dont' know. when i went in to check on them just now it was laying on its side in the dirt. the top portion, where the second set of true leaves had just become as big as the first, had been severed from the stem. my first suspicion was bugs, but there were no bites in any of the leaves or anything, it had just been detached, so i'm not sure. also, there's still about 1/2 inch of stem sticking out of the dirt, i'm pretty certain this plant is now dead, but just in case is there any chance of new leaves budding from the stem, or do i pull it and drop a new seed? lastly, any ideas on what caused this and how to stop it from happening again? my "good" plant is untouched as far as i can tell.