---
product_id: 510611715
title: "FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer"
brand: "frog"
price: "$375.98"
currency: USD
in_stock: true
reviews_count: 5
category: "Frog"
url: https://www.desertcart.us/products/510611715-frog-serene-mineral-replacement-cartridge-4-bromine-cartridges-for-hot
store_origin: US
region: United States of America
---

# 4 weeks bromine cartridge life 4 months mineral cartridge life Up to 600 gal spa coverage FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer

**Brand:** frog
**Price:** $375.98
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate your spa game with hassle-free, fresher water every soak!

## Quick Answers

- **What is this?** FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer by frog
- **How much does it cost?** $375.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/510611715-frog-serene-mineral-replacement-cartridge-4-bromine-cartridges-for-hot)

## 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

- • **Spa-Friendly Softness:** Minerals condition water for softer skin, swimsuits & surfaces
- • **Effortless Maintenance:** Prefilled cartridges mean no measuring, no mess, no stress
- • **Long-Lasting Freshness:** 4 bromine cartridges last weeks; mineral cartridge lasts 4 months
- • **Dual-Action Sanitizing Power:** Kills bacteria with minerals + 50% less bromine for crystal-clear water
- • **Perfect Fit for 600 Gallon Spas:** Designed exclusively for FROG Serene Floating or In-Line Systems

## Overview

The FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges bundle is a premium sanitizing solution for hot tubs up to 600 gallons. It combines mineral technology with reduced bromine use (up to 50% less) to deliver softer, cleaner water that’s gentle on skin and spa surfaces. Prefilled cartridges simplify maintenance, providing weeks of reliable sanitation and months of mineral conditioning, exclusively compatible with the FROG Serene Floating Sanitizing System.

## Description

The FROG Serene Bromine Cartridge and FROG Mineral Cartridge fit easily into the green reusable holder. Or into a hot tub with an in-line system. FROG Serene is a complete system that kills bacteria 2 ways, with FROG Sanitizing Minerals™ and up to 50% less bromine*. With less bromine you'll enjoy softer feeling water that's easier on skin, swimsuits and hot tub surfaces. FROG Serene creates Fresh Mineral Water® in your hot tub. Prefilled cartridges mean no mess, no guess, and no stress. This kit delivers months of Fresh Mineral Water, depending upon hot tub size and usage. *Compared to the minimum ANSI recommended bromine level of 2.0 ppm for a hot tub.

Review: Product is good but overpriced. Due to delay in delivery we had to find this poduct at a local pool store. The price was 40% lower for the green bromium cartridge which contain 25% more bromium. The yellow cartridge contains 150g and the green 200g!!! The blue cartridge was almost 50% cheaper.... Bottom line buying at a local store would have us save 100$. Never again!!!
Review: If you have a frog spa theater this product works great.

## Features

- FROG Serene (formerly Spa FROG) replacement cartridges give you weeks and weeks of ahhmazing hot tub water, fit the Floating or In-Line System
- FROG Serene is a complete sanitizing system that kills bacteria 2 ways with a low level of bromine and FROG Sanitizing Minerals giving you peace of mind
- FROG Sanitizing Minerals reduce bromine use up to 50%*; this bundle includes 4 Bromine cartridges for weeks of ahhmazing hot tub water, which last up to 4 weeks depending hot tub size and usage; ideal for 600 gallon hot tub
- This bundle includes 1 FROG Sanitizing Mineral Cartridge, which lasts 4 months; minerals kill bacteria, condition the water for softness and absorb acids – water feels much more comfortable
- Prefilled Cartridges mean no touching or measuring bromine – no mess, no guess, no stress!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BR64V4QR |
| ASIN  | B0BR64V4QR |
| Brand | FROG |
| Customer Reviews | 4.7 4.7 out of 5 stars (687) |
| Customer reviews | 4.7 4.7 out of 5 stars (687) |
| Date First Available | 21 January 2023 |
| Format | Tablet |
| Item model number  | FG2000 |
| Manufacturer  | FROG |
| Product Dimensions  | 25.4 x 5.08 x 5.08 cm; 1.13 kg |
| Product Name | Pool filter |
| Units | 5 Count |

## Product Details

- **Brand:** FROG
- **Item form:** Tablet
- **Number of Items:** 5
- **UPC:** 722906005599

## Images

![FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer - Image 1](https://m.media-amazon.com/images/I/718xklwo84L.jpg)
![FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer - Image 2](https://m.media-amazon.com/images/I/71KODSlX1BL.jpg)
![FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer - Image 3](https://m.media-amazon.com/images/I/71ZaweaXpZL.jpg)
![FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer - Image 4](https://m.media-amazon.com/images/I/71mMWkNKFBL.jpg)
![FROG Serene Mineral Replacement Cartridge + 4 Bromine Cartridges for Hot Tubs, for use only with FROG Serene Floating Sanitizing System for Spas up to 600 gallons, Quick and Easy Hot Tub Sanitizer - Image 5](https://m.media-amazon.com/images/I/71p+L2uQoeL.jpg)

## 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

### ⭐ Review
*by C***U on 9 June 2025*

Product is good but overpriced. Due to delay in delivery we had to find this poduct at a local pool store. The price was 40% lower for the green bromium cartridge which contain 25% more bromium. The yellow cartridge contains 150g and the green 200g!!! The blue cartridge was almost 50% cheaper.... Bottom line buying at a local store would have us save 100$. Never again!!!

### ⭐⭐⭐⭐⭐ Review
*by J***A on 30 November 2025*

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

### ⭐⭐⭐⭐⭐ Review
*by A***R on 25 November 2025*

Easy to use

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-02-15*