I have a pool + spa ~15000 gallons combo with a variable speed 1HP pump and heater. The pool is able to either circulate pool only, spa only, or spa spillover into pool. Does anyone have any recommendations of a schedule to maximize efficiency of the pump and also the heater so the spa doesn't loose too much heat due to circulation? So far, it seems that I am getting a chlorine loss of about 1-1.5 ppm a day. In addition, does any one have any tips or guides of a good rpm for the pump for the pool and spa mode?