Frog Serene Mineral Cartridge for Spa and Hot Tub Use from King Technology INC. Designed specifically for the Spa Frog Serene In-Line System or Frog Serene Floating System, this cartridge infuses essential water-softening minerals to transform your spa experience and deliver a more luxurious soak.
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Softens water by releasing minerals that balance and cushion your skin for a smoother, more comfortable soak.
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Fresh Mineral Water that helps maintain a clean, revitalizing spa experience.
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Cleaner, clearer, softer and easier water, simplifying maintenance and enhancing overall comfort.
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Easy to install and replace, designed for seamless use within the Spa Frog Serene system.
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Trusted brand King Technology INC., a respected name in spa and pool care.
Bring a gentle, mineral-enhanced balance to your spa—for a soothing soak and more enjoyable spa days.
