I see time and again where a homeowner goes into the local hardware store, buys a centrifugal pump then calls me saying "it doesn't work". My favorite is when I ask why there are pvc sewage fittings all over instead of schedule 80 components. Costs too much is what I hear in reply. Never could figure that one out, by the time I get the Northern Star cheap-assed pump reinstalled and all the piping sorted out the dude has just paid me over $500 to straighten out his Ace special. I have always applauded the knowledgeable verse cheap do-it-yourself kind of guy, especially the guys similar to the o.p. Go in, get the system set-up properly so the dude has something to mess around with - then usually get invited for a beer or three while sitting on the back porch watching the water fly.