N-P-K question.

I understand there should be a higher amount of Nitrogen during veg.

When should there be higher Phosphorus? Potassium?

I know its during flowering but is there a specific time when one should be higher or should they both be equally higher than nitrogen?

Thanx in advance.

veg nutes first 2 weeks of flower they use alot of N in the stretch then switch over to the bloom