I am working on a bid wich will include a drip zone. Only done 1 and it was small and pretty easy, just a few planter boxes, and 2 small flower beds. This one will be a lot different. The area consists of a lot of different plants. Really have a flow question. I know I have roughly 20gpm, but how does that translate into a drip sittuation. What I need to be able to determine is how many zones it will take based on # of emmiters and my flow. Do I figure it the same way I would a rotor or spray zone . Example, 20gpm is my flow rate, a zone with 20 sprays 18 10h and 2 10q's. 10h gpm=.79x18=14.22gpm 10q gpm=.39x2=.78 Total flow is 15gpm for this zone.