EVERYTHING YOU NEED FOR A FRESH START! These kits provide everything you need to get your freshly filled spa ready for use. Kits are available for spas using bromine or chlorine as the primary sanitizer. Bromine Spa Kits Bromine is a slower-dissolving, more stable sanitizer than chlorine when used in warm water conditions, so the tablets last much longer. Simply put tablets into floater(included) and refill as needed.