---
product_id: 637626028
title: "Serene Bromine Replacement Cartridge for Hot Tubs for use only with FROG Serene in-Line and Floating Sanitizing Systems for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer – 150 Grams"
brand: "frog"
price: "55537CFA"
currency: XOF
in_stock: true
reviews_count: 5
category: "Frog"
url: https://www.desertcart.sn/products/637626028-serene-bromine-replacement-cartridge-for-hot-tubs-for-use-only
store_origin: SN
region: Senegal
---

# Lasts 2-4 weeks per cartridge Kills bacteria 2 ways Prefilled & recyclable cartridge Serene Bromine Replacement Cartridge for Hot Tubs for use only with FROG Serene in-Line and Floating Sanitizing Systems for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer – 150 Grams

**Brand:** frog
**Price:** 55537CFA
**Availability:** ✅ In Stock

## Summary

> ♨️ Elevate your soak with smarter, softer sanitation — because your hot tub deserves the best!

## Quick Answers

- **What is this?** Serene Bromine Replacement Cartridge for Hot Tubs for use only with FROG Serene in-Line and Floating Sanitizing Systems for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer – 150 Grams by frog
- **How much does it cost?** 55537CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/637626028-serene-bromine-replacement-cartridge-for-hot-tubs-for-use-only)

## Best For

- frog enthusiasts

## Why This Product

- Trusted frog brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Dial Control:** Easily customize bromine levels to perfectly suit your hot tub’s needs
- • **Long-Lasting Cartridge Life:** Enjoy up to 4 weeks of hassle-free sanitation per cartridge
- • **Dual-Action Sanitizing Power:** Combines bromine and minerals to kill bacteria effectively and gently
- • **Up to 50% Less Bromine Usage:** Reduces chemical exposure for softer skin, hair, and swimsuit care
- • **Eco-Friendly & Easy Replacement:** Prefilled, quick-swap design with recyclable materials for sustainable spa care

## Overview

The FROG Serene Bromine Replacement Cartridge is a prefilled, recyclable sanitizer designed for hot tubs up to 600 gallons. It works exclusively with FROG Serene Mineral Cartridges to kill bacteria two ways—using a low level of bromine combined with mineral sanitizers—reducing bromine use by up to 50%. This system delivers clearer, softer water that’s easier on skin and swimsuits, with a cartridge lifespan of 2-4 weeks and simple dial control for precise sanitation.

## Description

This FROG Bromine Cartridge works only with FROG Sanitizing Minerals, together, they create Fresh Mineral Water in your hot tub – simply ahhmazing hot tub water; FROG Serene Floating Sanitizing System uses up to 50% less bromine*; it kills bacteria 2 ways with FROG Sanitizing Minerals and a low level of bromine. Less bromine means water is Cleaner, Clearer, Softer and Easier to take care of. FROG Sanitizing Minerals kill bacteria, condition the water for softness, help keep pH balanced and absorb acids, water is much more comfortable. FROG Serene is a complete hot tub sanitizing system and the only one that creates Fresh Mineral Water in your hot tub. The FROG Serene Bromine Cartridge lasts up to 4 weeks, depending on hot tub size and use, one Bromine Cartridge is ideal for a 600 gallon hot tub. The FROG Serene system delivers the serene feeling you’re longing for. *Compared to the minimum ANSI recommended bromine level of 2.0 ppm. for a hot tub.

Review: I've been a hot tub owner for years, and I've tried just about every sanitation system out there. Let me tell you, the FROG Serene Bromine Replacement Cartridge has been a game-changer! I was hesitant to switch from traditional chlorine, but the ease of use and the consistently beautiful water have completely won me over. Installation was a breeze – just pop it in and adjust the dial. The water has never looked or felt better. It's incredibly clear, and the bromine level stays perfectly balanced, meaning I spend less time fussing with chemicals and more time enjoying my hot tub. No more harsh chlorine smells or irritated skin! What truly sets this product apart is the longevity of the cartridge. I'm amazed at how long it lasts, saving me both time and money. Plus, the peace of mind knowing my water is sanitized effectively is priceless. If you're looking for a simple, effective, and gentle sanitation system for your hot tub, look no further than the FROG Serene Bromine Replacement Cartridge. It's truly a 5-star product that has made hot tub ownership a much more enjoyable experience. Highly recommend!
Review: Good price. Fits good in hot tub fixture.

## Features

- For use in FROG Serene (formerly Spa FROG) Floating System or In-Line System with the Mineral Cartridge (sold separately); FROG Serene kills bacteria 2 ways with a low level of bromine and FROG Sanitizing Minerals
- The FROG Serene Fresh Mineral Water hot tub system uses Bromine and Mineral Cartridges that work together to kill bacteria 2 ways, reduce bromine use up to 50%* and improve the overall quality of hot tub water
- You use less bromine, making water easier on skin, hair, swimsuits, and your hot tub’s surfaces. FROG Sanitizing Minerals condition the water for softness and absorb acid to help keep pH balanced
- The Bromine Cartridge can be dialed in to meet your hot tub’s precise needs and is designed to last 2-4 weeks per cartridge. It’s prefilled, making replacement quick and easy, plus it’s recyclable when empty
- Unlike chlorine, bromine slowly dissolves in hot water so it’s easier to regulate, has far less odors and is less impacted by pH swings making sanitizing more effective. Say goodbye to constant monitoring. The Mineral Cartridge must be replaced every 4 months to effectively sanitize the hot tub, it works with the Bromine Cartridge to kill bacteria 2 ways.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BF2VRGKR |
| Brand Name | FROG |
| Customer Reviews | 4.7 4.7 out of 5 stars (444) |
| Item Form | Tablet |
| Manufacturer | FROG |
| Product Benefits | Kills Bacteria |
| UPC | 722906005391 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** FROG
- **Item form:** Tablet
- **Number of Items:** 1
- **Product benefits:** Kills Bacteria
- **UPC:** 722906005391

## Images

![Serene Bromine Replacement Cartridge for Hot Tubs for use only with FROG Serene in-Line and Floating Sanitizing Systems for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer – 150 Grams - Image 1](https://m.media-amazon.com/images/I/713AQ5Ss0FL.jpg)

## Questions & Answers

**Q: How long does the bromine cartridge last?**
A: The yellow bromine cartridge lasts 2 to 4 weeks depending on the size of your hot tub and how often it is used.

**Q: What are the benefits of using bromine instead of chlorine to sanitize my hot tub?**
A: Bromine can be an excellent alternative to chlorine for hot tubs – it is gentler on your skin, eyes and respiratory system which makes it a better option for users with sensitive skin or allergies. It also has a milder odor compared to chlorine.

**Q: How is FROG Serene different from traditional sanitizing methods?**
A: If you are tired of chlorine odors and measuring chemicals, FROG Serene is for you. FROG Serene is not just bromine – it uses minerals to create Fresh Mineral Water in your hot tub. Prefilled cartridges eliminate guessing and handling of chemicals.

**Q: What is Fresh Mineral Water?**
A: FROG’s Sanitizing Minerals and a low level of bromine make cleaner, clearer, softer water that's easier to take care of. It's sanitized water without the harshness of other products and with prefilled cartridges it's much easier too.

**Q: What's included in the box?**
A: 1 FROG Serene Bromine Cartridge

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by P***R on 11 March 2025*

I've been a hot tub owner for years, and I've tried just about every sanitation system out there. Let me tell you, the FROG Serene Bromine Replacement Cartridge has been a game-changer! I was hesitant to switch from traditional chlorine, but the ease of use and the consistently beautiful water have completely won me over. Installation was a breeze – just pop it in and adjust the dial. The water has never looked or felt better. It's incredibly clear, and the bromine level stays perfectly balanced, meaning I spend less time fussing with chemicals and more time enjoying my hot tub. No more harsh chlorine smells or irritated skin! What truly sets this product apart is the longevity of the cartridge. I'm amazed at how long it lasts, saving me both time and money. Plus, the peace of mind knowing my water is sanitized effectively is priceless. If you're looking for a simple, effective, and gentle sanitation system for your hot tub, look no further than the FROG Serene Bromine Replacement Cartridge. It's truly a 5-star product that has made hot tub ownership a much more enjoyable experience. Highly recommend!

### ⭐⭐⭐⭐⭐ Review
*by A***S on 10 March 2026*

Good price. Fits good in hot tub fixture.

### ⭐⭐⭐⭐⭐ Review
*by [***] on 11 December 2025*

This FROG Serene bromine cartridge makes hot tub care simple—just drop it into the floating system and you’re done. Water stays clean and balanced with less odor, and there’s no measuring or mess. One cartridge lasts a couple of weeks depending on use. Perfect for anyone who wants low-effort, consistent sanitation without daily chemical maintenance.

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---

*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-06-19*