Here are four things that you need to do before adding chemicals to your hot tub: Number One: you want to heat up your water to at least 80 F Your water needs to be heated for the chemicals to dissolve properly. Number two: Turn off the blower. You want your hot tub water circulating in your system on, but turn off the blower and aerating your water with bubbles can actually raise your pH Number three: Keep the cover off. Chemicals need to off gas after they're at it, so keep the cover off for as long as the hot tub runs.

And number four: wait 20 minutes between each dough before adding the next chemical. Wait at least 20 minutes so that the first chemical has time to circulate and mix in.