I assume you can not put a variable speed pump, with a timer, on another timer that is connected to the SWG as it would probably constantly clear the memory of the VS pump every time power was shut off (really asking someone to confirm that for me). Does anyone know of an inexpensive switch that could be used and how to wire the switch so that SWG could only be powered when VS pump was on? That would be much better than a separate timer for the SWG as if a power failure hit when you were on vacation the 2 timers could fall out of sync and the SWG could be powered on when pump not on and you were not at home for several days.