This is my first grow so I'm very inexperienced... I have been using Dyna-gro Grow for veg for 3 weeks now. I got my clones when they were 2 weeks old. Today is the first day that I'm switching the lights over to 12/12. I figure since I'm already using Dyna-gro, I'll stick with it & use their bloom formula...

My question is: When should I introduce my flowering (bloom) nutrients from the first day of flowering?