Leisure Time B Defender for Spas and Hot Tubs, 1-QuartBrand: LEISURE TIME Features: BENEFITS: Prevents scale formation; removes existing scale; helps prevent precipitation of dissolved solids in spas and hot tubs USE: Weekly application for continued protection from scale COMPATIBILITY: Chlorine, bromine, ozone and biguanide sanitizers FEATURES: Protects spa surfaces and equipment; ideal for use at start up of hot tub or spa; able to be used with Leisure Time Metal Gon INCLUDES: 8 fl oz of hot tub