FROG Serene Replacement Mineral Cartridges for use with Hot Tub FROG Serene Floating Sanitizing System – Prefilled for Quick & Easy Hot Tub Maintenance – 1 Pack
$38.95
Price: $38.95
(as of Dec 15, 2025 12:05:23 UTC – Details)
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Cartridges for Hot Tub Maintenance: FROG Serene Replacement Mineral Cartridges are designed for use in the FROG Serene Floating System; deliver superior water treatment for a clean and clear hot tub experience
Enhanced Sanitization with Fresh Minerals: Mineral Cartridges sanitize the water along with FROG Serene Bromine
Long-Lasting Cartridge Use: Each FROG Serene Mineral Cartridge lasts 4 months, so you can enjoy long lasting sanitization; once the cartridge is empty, you can recycle it
Support Cleaner Hot Tub Water: Our FROG Serene Mineral Replacement Cartridges create Fresh Mineral Water, making the hot tub easier on skin, swimsuits and your hot tub’s surfaces
Water Care Expertise: FROG has more than 25 years of experience making water care easier & keeping pool, hot tub and swim spa water sanitized; FROG’s patented Mineral Technology and prefilled cartridges create cleaner, clearer, softer water
Customers say
Customers find the mineral cartridge works well in hot tubs, keeping water clear and inviting, while being easy to maintain and install in the cartridge holder. The product fits perfectly and lasts a long time, with one customer noting it’s half full of minerals. While some customers consider it good value for the cost, others find it expensive.
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