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For pool the suction valve for pool should be on and spa should be off the return valve for pool should be on and spa should be offl for spa the suction valve for spa should be on and pool should be off the return for spa should be on and pool should be off If your spa is a spillover spa that spills back into the pool you would have the spa return valve on and the pool suction valve on (all other valves off). this is your current setting according to your description of the valves but the picture shows that you have both pool and spa returns open and also the waterfall and the pressure side cleaner return. The pressure side cleaner line does not have a booster pump so it was probably for a Polaris 360 cleaner, which is the only one I know of that does not require a booster pump (there might be others on the market but I am not aware of any). Having the pressure side line open is fine. it just become another return. If you do get a cleaner then close the returns so only the cleanier line is open, have the waterfall and spa returns closed, and have the suction side set to pool. Waterfall should work when you have the pool returns running. The