In mild climates during the offseason, your pool professional should maintain pool and spa operations at normal levels. This includes maintaining water levels, sanitizing regularly and retaining proper pH, total alkalinity and calcium hardness levels. Circulating unheated water through the system will help keep the equipment reasonably free of problems, even during occasional freezing situations. When ever in doubt feel free to call the Above Ground Pool & Spa Company for more detailed advice. (210-646-7665)