I have a Polaris 180 with booster pump attached to a single-speed 2 hp main pump. My pool has an attached spa, so the main pump needs to be powerful enough to run the spa jets. I am considering buying a two-speed pump, but I am wondering if the Polaris w/booster can be run while the main pump is in low speed, or if it requires the main pump to be in high speed. If it is the former, then I imagine I will not need a special timer to put the main pump into high speed when the Polaris is running.