FROG Serene Replacement Bromine Cartridge - 1 Pack

Quick, Easy Bromine Replacement for the FROG Serene Floating System

Keep your hot tub water clean, clear, and easier to maintain with the FROG Serene Replacement Bromine Cartridge (150 grams, Yellow  Cartridge). Designed for use with the Hot Tub FROG Serene Floating Sanitizing System, this prefilled bromine cartridge helps simplify spa water care by reducing measuring, scooping, and routine chemical guesswork.

This 1-pack 150 gram replacement cartridge is ideal for hot tub owners who already use the FROG Serene Floating System and need a fresh bromine cartridge to keep their sanitizer system working properly.

Prefilled Cartridge for Simple Hot Tub Maintenance

The FROG Serene bromine cartridge comes prefilled for convenient replacement. Instead of handling loose bromine tablets or manually measuring sanitizer, simply insert the cartridge into the compatible FROG Serene system, adjust the dial for your spa’s needs, and continue regular water care.

The cartridge is designed to work with the FROG Serene mineral cartridge, creating a mineral and bromine sanitizing system that helps keep spa water fresh, comfortable, and easier to manage.

Designed for FROG Serene Floating Sanitizing Systems

This replacement bromine cartridge is made for use with the FROG Serene Floating Sanitizing System. The FROG Serene system uses a mineral cartridge and a bromine cartridge that snap into the reusable floating holder, allowing the system to release sanitizer into the hot tub water.

This cartridge is not a standalone spa sanitizer and should not be used as a universal bromine dispenser. For proper fit and performance, use it with the compatible FROG Serene Floating Sanitizing System and the required FROG Serene mineral cartridge.

For Hot Tubs 150 to 600 Gallons

The FROG Serene Floating System is designed for hot tubs from 150 to 600 gallons. The bromine cartridge can be adjusted to meet the sanitizing needs of your spa based on size, water temperature, bather load, and usage frequency.

For best results, test your spa water regularly and follow the manufacturer’s instructions for bromine levels, water balance, dial settings, and cartridge replacement.

Lasts Approximately 2 to 4 Weeks

Each FROG Serene bromine cartridge typically lasts about 2 to 4 weeks, depending on hot tub size, usage, water temperature, filtration, and dial setting. Replace the cartridge when it is depleted or when your water testing indicates the bromine level is no longer in the recommended range.

Keeping a replacement cartridge on hand helps prevent interruptions in your hot tub maintenance routine and supports consistent sanitizer delivery.

Helps Support Cleaner, Softer Hot Tub Water

The FROG Serene system uses FROG minerals and bromine to help destroy bacteria and maintain water quality. When used as directed, the system is designed to reduce bromine use compared with standard bromine routines while still supporting clean, clear, comfortable spa water.

For the best soaking experience, balance your water before use, maintain proper filtration, test regularly, and replace the mineral and bromine cartridges according to the manufacturer’s schedule.

Key Benefits

• 1-pack replacement cartridge: Includes one FROG Serene bromine cartridge.

• Made for FROG Serene: Designed for use with the Hot Tub FROG Serene Floating Sanitizing System.

• Prefilled for convenience: Helps reduce measuring, scooping, and chemical handling.

• Works with FROG minerals: Designed to be used with the FROG Serene mineral cartridge.

• For hot tubs 150 to 600 gallons: Supports compatible residential spas in the recommended size range.

• Typical 2 to 4 week cartridge life: Replacement timing varies by spa size, usage, temperature, and dial setting.

• Adjustable sanitizer output: Dial setting helps match bromine release to your hot tub’s needs.

• Cleaner, clearer water support: Helps maintain fresh, comfortable hot tub water with easier routine maintenance.

• Great backup cartridge: Keep an extra on hand for uninterrupted FROG Serene system care.

Product Details

Compatibility and Requirements

This replacement bromine cartridge is intended for use with the Hot Tub FROG Serene Floating Sanitizing System. It should be used with the compatible FROG Serene mineral cartridge and reusable floating holder.

Before installation, make sure your hot tub water is properly balanced. Follow all manufacturer instructions for inserting the cartridge, setting the dial, testing bromine levels, maintaining pH and alkalinity, shocking the spa, and safely handling spa chemicals.

Do not use this cartridge as a loose bromine tablet substitute or universal spa dispenser. Confirm that your system is the FROG Serene Floating Sanitizing System before purchase.

Frequently Asked Questions

What is the FROG Serene Replacement Bromine Cartridge used for?

It replaces the bromine cartridge in the Hot Tub FROG Serene Floating Sanitizing System and helps sanitize spa water when used with the FROG Serene mineral cartridge.

How many cartridges are included?

This item includes 1 prefilled FROG Serene bromine cartridge.

What hot tub system is this cartridge compatible with?

This cartridge is designed for use with the Hot Tub FROG Serene Floating Sanitizing System.

What hot tub size is FROG Serene designed for?

The FROG Serene Floating System is designed for hot tubs from 150 to 600 gallons.

How long does one bromine cartridge last?

One FROG Serene bromine cartridge typically lasts about 2 to 4 weeks depending on hot tub size, use, temperature, filtration, and dial setting.

Does this cartridge work by itself?

No. This bromine cartridge is designed to work as part of the FROG Serene system with the FROG Serene mineral cartridge and floating holder.

Is this cartridge prefilled?

Yes. The cartridge is prefilled to help make replacement quick and easy.

When should I replace the cartridge?

Replace the cartridge when it is depleted or when water testing shows the bromine level is no longer in the recommended range.