FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams)

★★★★★ 4.3 90 reviews

$97.99
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$97.99
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Free shipping Free 30-day returns

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Management number 214847785 Release Date 2026/04/12 List Price $39.20 Model Number 214847785
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  • This FROG Serene In-Line Cartridge Replacement Bundle gives you weeks and weeks of ahhmazing hot tub water, for use in FROG Serene In-Line System. The Bromine and Mineral Cartridges fit in the Cartridge Holder installed on select Marquis Spas, Artesian, Caldera Spas and Hot Spring Spas
  • FROG Serene is a complete sanitizing system that eliminates organic contaminants 2 ways with a low level of bromine and FROG Sanitizing Minerals resulting in Cleaner, Clearer, Softer water that is Easier to maintain
  • The FROG Serene Fresh Mineral Water hot tub system includes a Bromine and a Mineral Cartridge to eliminates organic contaminants 2 ways, reduce bromine use up to 50%* and improve the overall quality of hot tub water
  • Using far less bromine makes water easier on skin, hair, swimsuits, and hot tub surfaces. FROG Sanitizing Minerals condition the water for softness and absorb acid to help keep pH balanced
  • This bundle includes 1 FROG Sanitizing Mineral Cartridge, which lasts 4 months; minerals eliminates organic contaminants, condition the water for softness and absorb acids – water feels much more comfortable, and 3 FROG Serene Bromine Cartridges (200 grams) - each lasts up to 4 weeks, depending on hot tub size and use. Prefilled Cartridges mean no touching or measuring bromine – no mess, no guess, no stress!
  • Unlike chlorine, bromine slowly dissolves in hot water so it’s easier to regulate, has far less odors and is less impacted by pH swings making sanitizing more effective. Say goodbye to constant monitoring. The Mineral Cartridge must be replaced every 4 months to effectively sanitize the hot tub, it works with the Bromine Cartridge to eliminates organic contaminants 2 ways

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