The hot tub sanitizer (bromine or chlorine) is one of the essential elements to ensure proper maintenance and sanitation of your hot tub. This helps in eliminating the bacterial issues and make the hot tub safe to enjoy an optimal soaking experience. Shocking or oxidizing is one of the best ways of hot tub maintenance that eliminates the wastes like perspiration, cosmetics, body oils and more. Make sure you use an ideal level of sanitizer! http://cedartubsdirect.blogspot.in/2017/07/hot-tub-pump-replacement-and-maintenance.html