 I can put my chlorine or my bromine in my tub and all is well. It's not always the case, and unfortunately, I'd say 95% of the time, it's not always the case. You know, the chlorine and the bromine works great in the water. However, you have biofilm that's already growing in that plumbing system that there's no amount of chlorine or bromine or sanitizer in general that can get in there and penetrate those outer layers of the biofilm. So if you own a hot tub, instead of sitting there pouring chlorine