I have a two speed pump and normally have it on for only 8 hrs a day at low speed. This is approximately 4 turnovers a day. The high speed I usually use only for vacuuming and sometimes chemical addition. I understand the SWG is only operating when the pump is - so do I buy a Hayward AQR3 and then run my pump continuously ? Or do I get a bigger one (AQR9) and run it part time?