FROG Serene Replacement Mineral Cartridge with 3 Replacement Bromine Cartridges for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance

Q: How many of each (yellow/blue) cartidges are sold in this losting? I can't tell by the picture or description. TY

One Blue (mineral) plus 3 Yellow (bromine).

Q: Will this work with the in-line system where you place the cartridges in a slot built into the spa?

It does with mine, but you should probably check the owners manual. Mine is a Marquis spa and uses these cartridges in the "slot" that pulls up and out to install. These were previously called Spa Frog if that helps.

Q: What's the difference between frog ease and frog serene?

Frog serene is a round cylinder that fits into the tube type cylinder slot. Frog Ease is more triangular . These cartridges are NOT interchangeable.

4.7/5

Product ID: 498346766

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Details

Brand
FROG
Item Weight
1.8 Pounds
Item Form
Cartridge
Product Benefits
Controls Algae
UPC
722906038573

💧50% less bromine for softer water

🕒4 months mineral cartridge life

⚙️Prefilled cartridges for hassle-free use

Description

💦 Elevate your soak with cleaner, softer water—because your hot tub deserves the best.

ODOR FREE REFRESHMENT - Slow-dissolving bromine means far less chemical smell, creating a spa-like experience every soak.
EFFORTLESS HOT TUB CARE - Prefilled mineral and bromine cartridges simplify maintenance so you spend less time cleaning and more time relaxing.
LONG LASTING MINERAL POWER - One mineral cartridge keeps your water silky soft for up to 4 months—consistency you can count on.
TRUSTED WATER CARE EXPERTISE - Backed by 25+ years of patented mineral technology, ensuring crystal clear, balanced water with minimal effort.
GENTLE YET EFFECTIVE SANITIZATION - Uses up to 50% less bromine, reducing skin irritation and preserving swimsuits and hot tub surfaces.

The FROG Serene Replacement Mineral Cartridge set includes one mineral cartridge lasting up to 4 months and three bromine cartridges lasting 2-4 weeks each. Designed for the FROG Serene Floating Sanitizing System, it reduces bromine use by up to 50%, minimizing skin irritation and odors while maintaining clean, soft, and clear hot tub water with patented mineral technology.