I was just wondering how often you all change the water in your spa? I heard every 6 months and then some say once a year. We have a stand alone spa on a deck and we don't use it everyday. I would say once or twice a week in the summer and maybe 2 or 3 times a week in the winter. We have a 400 gallon spa and the water is very clear and sparkly!
Just wondering if there is any 'set' answer on this? Thanks!