FROG @Ease Mineral Cartridge + SmartChlor Cartridges for Marquis, Caldera, Artesian & Hot Springs Spas - Hot Tub Sanitizer, CYA Free, for up to 600 Gallons Garfine INCREDIBLE CONTRAST: Features Full-Array Local

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FROG @Ease Mineral Cartridge + SmartChlor Cartridges for Marquis, Caldera, Artesian & Hot Springs Spas - Hot Tub Sanitizer, CYA Free, for up to 600 Gallons Garfine INCREDIBLE CONTRAST: Features Full-Array LocalBrand: FROG Features: For use only in certain hot tub models: Artesian Elite, Artesian Island (optional on Artesian Island Elite and South Seas); Marquis Crown (optional on Marquis Elite, Vector and Celebrity); Caldera Vacanza; and Hot Spring Hot Spot. Includes 1 Mineral Cartridge that lasts 4 months plus 3 FROG @ease SmartChlor Cartridges, each lasts up to 3 4 weeks depending upon hot tub size and usage; ideal for 600 gallon hot tub. Eliminates