Northern pride PICTURE

OK, can some one help me out here
I am confused with the whole fertilizer/nutrient side of things

At the moment I am watering every three days with (baby bio, plant food) added to the water but I am considering the flowering stage, what I need to know is

What should I use as fertilzer and what should I use as nutrients or are these one and the same?? DUH!!

Is there a product that stands out above the rest and how often should i use the nutrients?? and at what dilution?

Any help/pointers will be really usefull as I dont want to F**k it up now

MANC