---
product_id: 498346766
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 - 3 Month Bundle"
brand: "frog"
price: "966 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Frog"
url: https://www.desertcart.ro/products/498346766-frog-serene-replacement-mineral-and-bromine-cartridge-kit-for-use
store_origin: RO
region: Romania
---

# 4-month mineral cartridge lifespan 50% less bromine for softer water Prefilled cartridges for easy 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 - 3 Month Bundle

**Brand:** frog
**Price:** 966 Lei
**Availability:** ✅ In Stock

## Summary

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

## 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 - 3 Month Bundle by frog
- **How much does it cost?** 966 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/498346766-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

- • **Odor-Free Relaxation:** Slow-dissolving bromine means no harsh chlorine smell—just pure unwind vibes.
- • **Reduced Chemical Exposure:** Uses 50% less bromine, protecting your skin, swimsuits, and tub surfaces.
- • **Long-Lasting Mineral Power:** Mineral cartridge delivers up to 4 months of silky soft, fresh water.
- • **Trusted Water Care Expertise:** Backed by 25+ years of patented mineral technology for crystal-clear, balanced water.
- • **Effortless 3-Month Hot Tub Care:** Prefilled mineral and bromine cartridges simplify your routine—just swap and soak.

## Overview

The FROG Serene Replacement Mineral and Bromine Cartridge Kit is a 3-month supply designed for the FROG Serene Floating Sanitizing System. Featuring a 4-month mineral cartridge and three 2-4 week bromine cartridges, it reduces bromine use by up to 50%, resulting in softer, clearer water with less odor and skin irritation. Prefilled cartridges make hot tub maintenance quick and hassle-free, supported by over 25 years of water care innovation.

## 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 - 3 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 three 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 |
|---------------|-------|
| Best Sellers Rank | #2,199 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #17 in Hot Tub Accessories |
| Brand | FROG |
| Customer Reviews | 4.7 out of 5 stars 1,211 Reviews |
| Item Form | Cartridge |
| Item Weight | 1.8 Pounds |
| Number of Items | 4 |
| Product Benefits | Controls Algae, Maintains Clean Sanitized Water, Protects Against Skin Irritation |
| UPC | 722906038573 |

## Product Details

- **Brand:** FROG
- **Item Form:** Cartridge
- **Item Weight:** 1.8 Pounds
- **Product Benefits:** Controls Algae, Maintains Clean Sanitized Water, Protects Against Skin Irritation
- **UPC:** 722906038573

## 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 - 3 Month Bundle - Image 1](https://m.media-amazon.com/images/I/91tYldvpRGL.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 3 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 Cartridge Kit for Hot Tubs for use only Serene Floating Sanitizing Systems - for Spas up to 600 gallons - Includes Mineral Cartridge & 3 Bromine Cartridges
- FROG Jump Start for Hot Tubs - Start-Up Chlorine Shock Removes Organic Contaminants & Establishes Chlorine Level - Hot Tub Set Up & Treatment - 1 Pack
- 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 - 6 Pack

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-12*