Second set was either physically removed from the pot (unlikely, you'd have to have a FURRY pest problem...), or they rotted.
I am going to go with the latter. IT sounds to me like you had hard-husked seeds. It's not uncommon for a seed's shell to be so tough that the seedling has difficulty cracking or shedding it. Since you said that the surviving seedlings still haven't shed their shells, I'd say those were some tough husks!
Next time you germinate your seeds, before you put them in to soak, scape or scuff along the sharpest edge of the seed gently with a nail file. Not too much. It will be much easier to shed. Were these commercial bagseeds by the way? Out of a bag of some form of compressed weed? A couple of those burly workhorse production strains have amazingly large and tough seeds.
stinkyattic Reviewed by stinkyattic on . What in the hell happend ??? OK, So I germinated 4 seeds and put them in soil with some perlite and put under coolwhite CFL's, It's been 7 days and only 2 of them sprouted and they look like shit, they are only out of the soil a tad bit and almost look yellow, and the seed is still connected to them, Now the other 2 seeds are no where to be found.I dug up ome soil and the 2 other seeds I planted are not there anymore, what could of happend ??? Ill have pictures up soon. Rating: 5