I have done all my plumbing on my pool, as that was the one part of the original install that was inept--barbed fittings INSIDE Tigerflex, which is flexible PVC. I ALWAYS have quick releases and valves so I can cut off sections to remove them or replace them. And, on the theory that if you don't leave room to cut and re-glue, THAT is the point you'll have to cut and re-glue, I always leave room.

The blue glue is SUPPOSED to be better for flexible PVC...Not sure it's true. My SWG manifold is 2" and all my plumbing is 1 1/2" so a reducer went on each end...with enough 2" glued in to replace as needed. But, since the cell itself is on two quick connects, I hope I don't have a problem for many years.