I have a spare pump laying around. It pumps about 500gph, the one on my pool does 1000. Other than selling it I would like to use it for something. Would hooking it with the other pump (before my 1000gph, or between my 1000gph and my SWG, or after my SWG) speed up the system or slow it down? I thought maybe getting a 3 way valve to put onto my inlet hose and make some sort of fountain or something with it. If I do that would I have to keep a filter in it? Its a cart filter/pump. Intex style. Would a 3 way valve let water go to both pumps at the same time? Would doing that restrict flow to my 1000gph pump which runs my SWG that has a flow sensor? If I do have to keep a filter in it AND it would restrict the flow then I could just run the pump with the fountain on it when peeps are in since we dont run the SWG while people are in it. Lowes has some 3 way valves in the pool section. I will check it out tomorrow! Just to look and see how it opens and closes.