Since completing quite a bit of research, I've noticed that every person's needs seems to be completely different. What ends up working perfectly for someone else may not make sense for everyone. I'd like to hear honest feedback from people that have used these instead of just reading sales claims.
https://www.tumblr.com/southwestspasaz/803688761366085632/arizona-hot-tub-maintenance-tips-for-year-round
Hot tub not heating—where should I start? (https://swampash.net/hello-world/#comment-21128) eefaeee