Frog Serene Replacement Blue Spa Mineral Cartridge with Scum Absorber and Hot Tub Care E-Book

CONTAINS: FROG Serene Replacement Mineral Cartridge, Scum Absorber, Hot Tub Care Ebook Spa Frog Mineral Cartridge refill for use in either the Spa Frog Floating System or for the Spa Frog Inline System which is factory-installed in the spa. Use with companion FROG Serene Bromine Cartridge for complete water care (Yellow cartridge) The mineral cartridge lasts four months. We recommend changing the blue mineral cartridge each time the hot tub is drained and refilled. FROG Serene is ideal for hot tubs sized 150-600 gallons. About FROG Serene Mineral Cartridge Bundle FROG Serene keeps your hot tub water clean while eliminating the guesswork. Instead of measuring in chemicals daily, you simply replace a pre-filled cartridge about once a month. The resulting Fresh Mineral Water has a completely different quality that provides the serene spa soak experience you’re looking for. Spa Frog Mineral Cartridge refill for use in either the Spa Frog Floating System or for the Spa Frog Inline System