Ok, lets see what kind of pro/con response I can get about pressure switch settings for a multi-stage pump station. I am going to be replacing the 15HP jockey pump with a 15HP pump in the very near future (looks like I will have to drive down and get it, but beats not having it or paying any other quotes I got). Pump station consists of a 30HP Berkley, a 25HP of unknown origin (its been painted and I haven't cleaned off the tag yet. Pump will catch up and cycle @ 135psi and 100gpm. Running alone we get 90psi@200gpm) and a 15HP pump (either a goulds or berkley). My past experience would tell me to "nest" the pressure settings. 15HP set to 110/120, the 25HP set to 105/125, and the 30HP set to 100/135. I am tempted to alter this and try the 30HP at 100/135, the 25HP at 110/120, and the 15HP at 115/125. The only difference is that the jockey pump will run longer before shutting down. It also means the 25HP shuts off first if all three pumps have been engaged.