---
product_id: 593517734
title: "FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams)"
brand: "frog"
price: "₨3852"
currency: SCR
in_stock: true
reviews_count: 8
category: "Frog"
url: https://www.desertcart.sc/products/593517734-frog-serene-in-line-cartridges-for-hot-tubs-that-have
store_origin: SC
region: Seychelles
---

# 4 months mineral cartridge lifespan dual-action sanitizing system 50% less bromine usage FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams)

**Brand:** frog
**Price:** ₨3852
**Availability:** ✅ In Stock

## Summary

> 💦 Dive into spa luxury with cleaner, softer water—because your hot tub deserves the best!

## Quick Answers

- **What is this?** FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams) by frog
- **How much does it cost?** ₨3852 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/593517734-frog-serene-in-line-cartridges-for-hot-tubs-that-have)

## 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

- • **Smart pH Balance:** Minerals absorb acids to maintain balanced pH, reducing constant monitoring and maintenance.
- • **Dual-Action Purity:** Combines bromine and minerals to kill contaminants two ways for crystal-clear water.
- • **Long-Lasting Freshness:** Mineral cartridge lasts up to 4 months; bromine cartridges provide up to 4 weeks each.
- • **Effortless Sanitization:** Prefilled cartridges eliminate mess and guesswork—just pop in and relax.
- • **Skin & Surface Friendly:** Uses less bromine to protect your skin, swimsuits, and hot tub surfaces from harsh chemicals.

## Overview

The FROG Serene In-Line Cartridge Bundle features a 4-month mineral cartridge and three 200g bromine cartridges designed for select hot tubs with built-in cartridge holders. This dual-action system reduces bromine use by up to 50%, delivering softer, clearer water that’s easier on skin and hot tub surfaces. Prefilled cartridges simplify maintenance by eliminating measuring and mess, while minerals help maintain pH balance for consistently fresh, sanitized water.

## Description

desertcart.com : FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams) : Patio, Lawn & Garden

Review: Price - The product was very good
Review: Easy To Use - Great product that keeps your hot tub sanitized without having to physically add a sanitizer.

## Features

- This FROG Serene In-Line Cartridge Replacement Bundle gives you weeks and weeks of ahhmazing hot tub water, for use in FROG Serene In-Line System. The Bromine and Mineral Cartridges fit in the Cartridge Holder installed on select Marquis Spas, Artesian, Caldera Spas and Hot Spring Spas
- FROG Serene is a complete sanitizing system that eliminates organic contaminants 2 ways with a low level of bromine and FROG Sanitizing Minerals resulting in Cleaner, Clearer, Softer water that is Easier to maintain
- The FROG Serene Fresh Mineral Water hot tub system includes a Bromine and a Mineral Cartridge to eliminates organic contaminants 2 ways, reduce bromine use up to 50%* and improve the overall quality of hot tub water
- Using far less bromine makes water easier on skin, hair, swimsuits, and hot tub surfaces. FROG Sanitizing Minerals condition the water for softness and absorb acid to help keep pH balanced
- This bundle includes 1 FROG Sanitizing Mineral Cartridge, which lasts 4 months; minerals eliminates organic contaminants, condition the water for softness and absorb acids – water feels much more comfortable, and 3 FROG Serene Bromine Cartridges (200 grams) - each lasts up to 4 weeks, depending on hot tub size and use. Prefilled Cartridges mean no touching or measuring bromine – no mess, no guess, no stress!
- 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 eliminates organic contaminants 2 ways

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #24,324 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #69 in Pool Filter Cartridges |
| Brand | FROG |
| Customer Reviews | 4.7 out of 5 stars 65 Reviews |
| Item Form | Powder, Tablet |
| Item Weight | 2 Pounds |
| Number of Items | 1 |
| Product Benefits | Controls Algae, Maintains Clean Sanitized Water, Protects Against Skin Irritation |
| UPC | 722906005643 |

## Product Details

- **Brand:** FROG
- **Item Form:** Powder, Tablet
- **Item Weight:** 2 Pounds
- **Product Benefits:** Controls Algae, Maintains Clean Sanitized Water, Protects Against Skin Irritation
- **UPC:** 722906005643

## Images

![FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams) - Image 1](https://m.media-amazon.com/images/I/61Y6j+6PcyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Price
*by E***. on September 26, 2025*

The product was very good

### ⭐⭐⭐⭐⭐ Easy To Use
*by A***R on November 29, 2024*

Great product that keeps your hot tub sanitized without having to physically add a sanitizer.

### ⭐⭐⭐⭐ Good set, but...
*by O***R on October 23, 2025*

I have no issues with the product performance. Easy to use, great water, no smell, all good. I have an issue with the packaging. I replace the Bromine cartridge every month, and the Metals cartridge every 4 months as directed by the manufacturer. So why do I only get 3 months worth of Bromine?

## Frequently Bought Together

- FROG Serene in-Line Cartridges for Hot Tubs That Have Built in Cartridge Holders, FROG Serene Mineral Cartridge + 3 Bromine Cartridges (200 Grams)
- FROG Test Strips for Pools and Hot Tubs, Quick and Easy Pool and Hot Tub Test Strips, Designed to use with FROG Water Care Products
- FROG Jump Start Fast and Easy Startup Chlorine Shock for Hot Tubs

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**Shop now:** [https://www.desertcart.sc/products/593517734-frog-serene-in-line-cartridges-for-hot-tubs-that-have](https://www.desertcart.sc/products/593517734-frog-serene-in-line-cartridges-for-hot-tubs-that-have)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-31*