Hello, No side effects to turning down spa, drain and refill 3 to 4 months. Turn off at breaker not just pack. Don't use soap unless you like suds and could mess up water chemistry, Use vinager water or rubbing alcohol. The Spa Mechanic-
Leisure time is OK, But API EZ-Spa works miracles. As I have a chemical service route and have been in the biz since 1980. Nothing against leisure time but my customers tell me to throw the other stuff away. Who can argue with their customers?