Old Reviews Nutes schedule? Canna Coco A&B, how long?

[The Muffin Man]

Hey all, Im so confused. So I have a grow going, I am using hydro with coco coir. I have purchased Canna Coco A&B. Is this a two part from start to finish or an "A" part for veg and a "B" part for flower? Thanks in advance. The Muffin Man