---
product_id: 504879933
title: "FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle"
brand: "frog"
price: "€ 204.06"
currency: EUR
in_stock: true
reviews_count: 9
category: "Frog"
url: https://www.desertcart.nl/products/504879933-frog-serene-replacement-mineral-and-bromine-cartridge-kit-for-use
store_origin: NL
region: Netherlands
---

# 4-month mineral cartridge lifespan 50% less bromine for softer water Prefilled cartridges for effortless maintenance FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle

**Brand:** frog
**Price:** € 204.06
**Availability:** ✅ In Stock

## Summary

> 💦 Dive into effortless luxury with FROG Serene—where clean meets serene.

## Quick Answers

- **What is this?** FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle by frog
- **How much does it cost?** € 204.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/504879933-frog-serene-replacement-mineral-and-bromine-cartridge-kit-for-use)

## 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

- • **Prefilled Convenience:** Ready-to-go cartridges simplify hot tub care—no mess, no guesswork, just pure relaxation.
- • **Effortless 4-Month Clean:** One mineral cartridge keeps your hot tub silky soft for a full 4 months—set it and forget it.
- • **Patented Mineral Technology:** Experience 25+ years of water care expertise delivering crystal-clear, fresh mineral water every soak.
- • **Half the Bromine, Double the Comfort:** Use up to 50% less bromine, reducing odors and protecting your skin and swimsuits.
- • **Odor-Free, Skin-Friendly Sanitization:** Slow-dissolving bromine means less chemical smell and a gentler soak for you and your hot tub surfaces.

## Overview

The FROG Serene Replacement Mineral and Bromine Cartridge Kit is a 4-month supply designed for the FROG Serene Floating Sanitizing System. Featuring patented mineral technology combined with low-level bromine, it reduces chemical use by up to 50%, delivering softer, odor-free water that’s gentle on skin and swimsuits. Prefilled cartridges ensure quick, hassle-free maintenance, backed by over 25 years of water care expertise.

## Description

desertcart.com: FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle : Patio, Lawn & Garden

Review: Best hot tub product! - This is the product that changed my hot tub system. Makes it so easy to keep clean now with less chemicals. Stabilizing the water for a longer time. No more chlorine smell great quality and functions great.
Review: Good price - If you have a frog spa theater this product works great.

## Features

- Cartridges for Hot Tub Maintenance: FROG Serene Mineral and Bromine Replacement Cartridges are designed for FROG Serene Floating System; includes one replacement mineral cartridge and four replacement bromine cartridges
- Innovative Technology for Clean Water: FROG Serene combines our patented mineral formula with a low level of bromine to create clean, silky soft Fresh Mineral Water in your hot tub
- Long-Lasting Performance: FROG Serene mineral cartridge lasts four months and each bromine cartridge lasts 2 to 4 weeks; prefilled FROG cartridges simplify the maintenance of your hot tub
- Hot Tub Sanitization: With FROG Serene, you use up to 50%* less bromine, making the water easier on skin, swimsuits and your hot tub’s surfaces; slow dissolving bromine creates far less odors than traditional chlorine
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BR64V4QR |
| Best Sellers Rank | #2,628 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #11 in Swimming Pool Bromine |
| Brand | FROG |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,227) |
| Item Form | Cartridge |
| Item Weight | 2.35 pounds |
| Item model number | FG2000 |
| Manufacturer | King Technology |
| Number of Items | 5 |
| Product Benefits | Kills Bacteria, Maintains Clean Sanitized Water, Protects Against Skin Irritation, Reduces Chlorine Odor |
| Product Dimensions | 10 x 2 x 2 inches |
| UPC | 722906005599 |
| Unit Count | 5.0 Count |

## Product Details

- **Brand:** FROG
- **Item Form:** Cartridge
- **Number of Items:** 5
- **UPC:** 722906005599

## Images

![FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle - Image 1](https://m.media-amazon.com/images/I/91my7dTPJUL.jpg)
![FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle - Image 2](https://m.media-amazon.com/images/I/71mMWkNKFBL.jpg)
![FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle - Image 3](https://m.media-amazon.com/images/I/718xklwo84L.jpg)
![FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle - Image 4](https://m.media-amazon.com/images/I/71KODSlX1BL.jpg)
![FROG Serene Replacement Mineral and Bromine Cartridge Kit for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Month Bundle - Image 5](https://m.media-amazon.com/images/I/71p+L2uQoeL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How long do the mineral and bromine cartridges last?**
A: The blue mineral cartridge lasts 4 months or whenever you drain your hot tub. Each 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 Mineral Cartridge and 4 FROG Serene Bromine Cartridges

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best hot tub product!
*by S***Y on November 10, 2025*

This is the product that changed my hot tub system. Makes it so easy to keep clean now with less chemicals. Stabilizing the water for a longer time. No more chlorine smell great quality and functions great.

### ⭐⭐⭐⭐⭐ Good price
*by J***A on November 30, 2025*

If you have a frog spa theater this product works great.

### ⭐⭐⭐⭐⭐ Didn’t take very long to get
*by A***R on January 12, 2026*

Came on time and it works very well. I’m very pleased with the product.

## Frequently Bought Together

- FROG Serene Replacement Mineral Cartridge with 4 Replacement Bromine Cartridges for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance
- FROG Maintain for Hot Tubs - Non-Chlorine Shock for use with All Hot Tub FROG Sanitizing Systems - Single Dose Packets for Easy Hot Tub Maintenance & Treatment - 12 Pack
- FROG @Ease Test Strips for Hot Tubs and Swim Spas - Test Strip with Out Indicator for FROG @Ease SmartChlor Cartridges, pH, Total Alkalinity and Total Hardness - 30 Test Strips

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-17*