What products should you use in a spa?

This will depend on the chemical analysis of the water. You need to balance the alkalinity, hardness and pH. To do this, you will need, among other things, Comfort #14 and Protection #10, which you can find at your Sima dealer in the Calypso line of specialized products. In addition, metals must be neutralized and the chlorine level recommended by Health Canada (between 3 ppm and 5 ppm) must be respected.