Sorry for the "sales pitch" but I mentioned that I would let you all know when a specific spa salt system was available...

AutoPilot has now introduced the Spa Pilot. Using 1500 ppm of salt, it is designed to maintain a NON-USE chlorine residual for spas up to 800 gallons. It works in conjunction with "Power Pouches" that are added one pouch before and one after usage (potassium Monopersulfate and other propriatary ingredients).