Granular chlorine sanitizer for hot tub spa water. Specially formulated granular chlorine disinfects and sanitizes hot water and is specifically for use in spas and hot tubs. After your spa has been filled, add 1 level tablespoon of chlorine to supershock the water and to establish a chlorine residual. Allow the spa to circulate until a chlorine reading of 1-3 ppm is attained; do not use your spa until the level has been reached. At this time, test the water again to ensure that the pH is between 7.4 - 7.8. If pH is below 7.4 add pH Up and if it s above 7.8 add pH Down. Note: Spa Sauna Direct only ships pool and spa chemicals within the continental United States.
Sodium Dichloro-S-Triazinetrione Dihydrate = 99%Inert Ingredients = 1%Total = 100%Available Chlorine = 55.5%