In my experiences I find that a larger eyeless chunk of chalice will take longer to form eyes... however, I believe that since the propagated coral has no eyes/mouth to accept food, it will attempt to grow them. Without a brain the chalice does not know how to focus the breaking of the new eyes/mouth through the eyeless skin of the coral... so many eyes will begin to form in all shapes and sizes though out a good portion of the chalice... just like random fungia/cyclo frags that have mouths growing out of the side and what not..... All corals have a "taking off" point, so if you have a large chalice that has a little amount of eyes, one night you may wake up to 35 new eyes.... kinda like the eyeless chalice frags that blow up with eyes. I base this information on absolutely nothing, because it is just my opinion. :)