FROG Serene In-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders - 1 FROG Serene Mineral Cartridge and 3 Bromine 200 Gram Cartridges

Complete Mineral & 200 gram Bromine Bundle for Hot Tubs with the FROG Inline Cartridge System (approximate 4 month supply) - Free Shipping!

The FROG Serene In-Line Cartridge Bundle – your secret to effortless spa maintenance and crystal-clear “mineral water”. This exclusive value pack includes 1 FROG Sanitizing Mineral Cartridge and 3 upgraded Bromine Cartridges (200 grams each compared to the yellow 150 gram Cartridges ), designed specifically for hot tubs with built-in cartridge holders.

Perfect Compatibility:

Specifically engineered for spas manufactured with the built in FROG Inline System including:

• Marquis Spas
• Artesian Spas
• Caldera Spas
• Hot Spring Spas

 Revolutionary Dual-Action Sanitizing:

FROG Serene combines the power of sanitizing minerals with a precise low-level bromine delivery system . This innovative dual-action approach attacks organic contaminants  while using up to 50% less bromine and maintaining pristine water quality with no smelly chlorine odors.

What's Inside:

• 1 FROG Sanitizing Mineral Cartridge (4-month lifespan)
• 3 FROG Serene 200 gram Bromine Cartridges (up to 4 weeks each)

The FROG Serene Advantage:

Unlike traditional sanitizers, this system delivers:

• Prefilled cartridges for no scooping and mess-free maintenance
• Gentler water that's softer on skin, hair, swimsuits, decking, and spa components
• Balanced pH levels and reduced pH swings ensuring sanitizing effectiveness
• Significantly reduced chemical odors (Ahhhhhh!)

Smart, Simple Maintenance:

Forget the daily ritual of scooping, measuring and adding chemicals. Simply replace the bromine cartridge monthly and the mineral cartridge every four months. The prefilled cartridges eliminate guesswork and ensure perfect water quality without the hassle of measuring or handling harsh chemicals directly.

Premium Water Quality:

Experience FROG Fresh Mineral Water® that's:

• Cleaner and clearer
• Noticeably softer
• Easier to maintain
• Gentler on hot tub and deck surfaces

Perfect For:

Hot tub owners who want to:

• Minimize maintenance time
• Enjoy softer, more comfortable water
• Reduce chemical exposure
• Maintain consistent water quality

Enjoy your hot tub experience much, much more with FROG Serene – where science meets simplicity for the ultimate in spa water care. No mess, no guess, no stress – just pure relaxation in crystal clear,  perfectly balanced water.

For optimal performance, replace mineral cartridge every 4 months or when draining/refilling hot tub. Bromine cartridge life varies based on tub size and usage (typically 2-4 weeks per cartridge).