They're still on the rock, but they are due to hatch tomorrow I think. So these guys are a no go :(
I just started my rotifer eggs. They should hatch in 24 to 72 hours. Catherine, they are Brachionus plicatillis, if you want to look them up in your book.
Right now they are just in a shallow plastic dish with some water. After 24 hours, I am supposed to feed them and after 72 hours, I am supposed to transfer them into a larger container (I am going to use soda bottles for these guys).