In general I would discard the Tsunami and recommend starting from scratch, we offer a better solution that enables the pumps to speed up and slow down. At a 40min delay you could feasibly run our synchronous pumps though this is a shorter delay than recommended and may shorten the life of the impeller. On these pumps we recommend simple wall timers with grounded connections, our 115v pumps are grounded and require a 3 prong socket. Our pumps utilize a shaftless technology to achieve a higher energy eficiency, you can see this very clearly on our 3000/2 795gph for 22w of electricity, roughly 2.5 times as much flow as a maxiJet 1200 at the same power consumption. To accomplish this we use a centrifugal clutch mechanism that is damaged by frequent start and stop operation. Two 6100 Streams would do the job, kit TS24. You would have two cords to contend with but it sounds like you have far more than that now. This kit would include a multicontroller to control these pumps in a much more elaborate manor than the Tsunami. The pumps would speed up and slow down at intervals from 1.5 to 6sec as well as alternate between 1min and 12hrs according to the program you choose. From the pump you will have 5m of cable roughly 16ft, this goes to a driver (the brain of the unit), from here you have 1m of cable to a transformer that converts 115vac to 22vac. These pumps use 45w of electricity but only 35w intank, heat production is virtually zero. With this much cable the cables could be run up into the attic, the driver cannot be exposed to anything you would not expose a computer too, so no extremes of temperature or moisture. Further the driver is best located somewhere you can hear it, an audible alarm notifies the user of any obstructions or pump problems. Please tell me more about your tank- material, overflow position, perimeter brace or not, etc, I can help better with this info.
