I am new to the SWG world and am trying to plan "winter" in California. The pool does get down into the high 50's during the winter, but if I don't chlorinate I will get mustard algae even at those temps. Since the SWG won't function at that temp I'm assuming all I can do is go back to manually pouring liquid chlorine every day between November and May? That's going to be a big damper on my joy at not having to cart 100+ lbs of chlorine every three weeks.