Hi, I have a 400 gallon hot tub in France - a Sundance, Lisbon. Everything has been purged, balanced, and is being sanitized with a SWG - disconnected the UV. No known problems. I am just looking ahead to the end of summer or possibly early winter and it will not be used for 6-9 months. Should I consider draining it or just turn off the heater and have someone I trust keep an eye on it? It does not freeze here. I tried to search for people doing similar things, but I couldn't find anything that looked definitive. It seemed pretty clear that if you can't get all the water out you are in the bug hosting mode....I'm sure others have found a "best way" to do this.