bloodmeal

My seedling are in mg rn. Im going to transplant them into a mix of promix potting soil and perlite. for veg I got these two products the bloodmeal is 12-0-0 and the all purpose is 4-4-4 both granular yall think Ill be goods?

Hey all, newbie here, I was wondering if someone could tell me is it better to use bonemeal or bloodmeal during the veg stage, and then flowering. How much of a variance can I have in my light cycle. If im off half hour or so in either direction, are there if any adverse effects? Thanks for any...