Ok I candled again and its Day 5. 15 of 20 have definite vascularization! 5 I'll keep to day 10, but am pretty sure are duds. So...of that 15 with vascularization about 6 have nice thick veining and a nice distinct embryo. Very healthy and beautiful to see. The others have a very fine, wispy veining that seems like its not very consistent. Its just different you know. Different from the normal thick veined ones and the ones i've seen candled here. Why is that? Is it bad? Does it mean its extra fragile?