INCLUDES: SmartChlor Floater, @ease cartridge, Jump Start Shock and 30 Test Strips. - Low-chlorine spa sanitizing system that uses 75% less chlorine and reduces shocking to once per month. Minerals help keep water pH balanced and conditioned for a softer feel. Floats on spa surface dispensing a combination of minerals and chlorine to fight bacteria and algae. Cartridges are pre-filled for no mess, no guess, and no stress! When chlorine runs out the device flips over, indicating the cartridge needs replacing. 6 kits per case. Replacement cartridges: SK EASE CHLOR