--- product_id: 69970620 title: "FROG Serene® Mineral Cartridge for Hot Tubs" brand: "frog" price: "€ 84.03" currency: EUR in_stock: true reviews_count: 13 category: "Frog" url: https://www.desertcart.hr/products/69970620-frog-serene-mineral-cartridge-for-hot-tubs store_origin: HR region: Croatia --- # Superior mineral water sanitization 4-month long-lasting cartridge life Eco-friendly recyclable cartridge FROG Serene® Mineral Cartridge for Hot Tubs **Brand:** frog **Price:** € 84.03 **Availability:** ✅ In Stock ## Summary > ♨️ Elevate your soak game with Serene® – where clean meets luxury! ## Quick Answers - **What is this?** FROG Serene® Mineral Cartridge for Hot Tubs by frog - **How much does it cost?** € 84.03 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/69970620-frog-serene-mineral-cartridge-for-hot-tubs) ## 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 - • **Eco-Conscious Care:** Recycle your cartridge and reduce waste while maintaining pristine water quality. - • **Skin & Suit Friendly:** Gentle on your skin and swimsuits, making every soak a luxurious experience. - • **Mineral-Powered Purity:** Harness the power of fresh minerals combined with bromine for next-level sanitization. - • **Trusted Water Expertise:** Backed by 25+ years of FROG innovation, ensuring your hot tub water stays cleaner, softer, and clearer. - • **Effortless 4-Month Clean:** Enjoy uninterrupted crystal-clear water with a cartridge that lasts a full season. ## Overview The Serene® Mineral Cartridge by FROG is a premium replacement cartridge designed for the FROG Serene Floating System, delivering enhanced water sanitization through fresh minerals combined with bromine. Each cartridge lasts up to 4 months, supports skin-friendly and swimsuit-safe water, and is fully recyclable. Trusted by over 3,200 users with a 4.7-star rating, it leverages 25 years of water care expertise to keep your hot tub water cleaner, clearer, and softer. ## Description Pool Solutions Visit the Store Pool Solutions Visit the Store Hot Tub Visit the Store Hot Tub Pool Visit the Store Pool Swim Spa Visit the Store Swim Spa Review: Works as promised. - Great price. Review: 💦 - Perfect for hot tub. ## Features - Cartridges for Hot Tub Maintenance: FROG Serene Replacement Mineral Cartridges are designed for use in the FROG Serene Floating System; deliver superior water treatment for a clean and clear hot tub experience - Enhanced Sanitization with Fresh Minerals: Mineral Cartridges sanitize the water along with FROG Serene Bromine - Long-Lasting Cartridge Use: Each FROG Serene Mineral Cartridge lasts 4 months, so you can enjoy long lasting sanitization; once the cartridge is empty, you can recycle it - Support Cleaner Hot Tub Water: Our FROG Serene Mineral Replacement Cartridges create Fresh Mineral Water, making the hot tub easier on skin, swimsuits and your hot tub’s surfaces - 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 | B000V86MVW | | Best Sellers Rank | #6,109 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #16 in Hot Tub Accessories | | Brand | FROG | | Brand Name | FROG | | Customer Reviews | 4.7 out of 5 stars 3,271 Reviews | | Global Trade Identification Number | 00722906038115 | | Included Components | Catridge only | | Item Form | Granular | | Item Type Name | Replacement Cartridge | | Item Weight | 4.64 ounces | | Manufacturer | FROG | | Manufacturer Part Number | 2530 | | Model Number | 2530 | | Number of Items | 1 | | Product Benefits | Kills Bacteria, Maintains Clean Sanitized Water, Protects Against Skin Irritation, Reduces Chlorine Odor Product Benefits Kills Bacteria, Maintains Clean Sanitized Water, Protects Against Skin Irritation, Reduces Chlorine Odor See more | | UPC | 852673896233 045635692299 789610246878 722906038115 789610229857 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** FROG - **Item Form:** Granular - **Item Weight:** 0.29 Pounds - **UPC:** 852673896233 045635692299 789610246878 722906038115 789610229857 ## Images ![FROG Serene® Mineral Cartridge for Hot Tubs - Image 1](https://m.media-amazon.com/images/I/71VdnYRcBCL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How long do the mineral cartridges last?** A: The blue mineral cartridge lasts 4 months or when draining the hot tub. **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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works as promised. *by A***S on March 10, 2026* Great price. ### ⭐⭐⭐⭐⭐ 💦 *by M***2 on November 2, 2025* Perfect for hot tub. ### ⭐⭐⭐⭐⭐ Hot tub *by T***0 on March 15, 2026* These work great with the hot tub. Good price. Would order again. Easy to use. ## Frequently Bought Together - FROG Serene Replacement Mineral Cartridges for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 1 Pack - FROG Serene Replacement Bromine Cartridge for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 1 Pack - FROG Jump Start for Hot Tubs - Start-Up Chlorine Shock Removes Organic Contaminants & Establishes Chlorine Level - Hot Tub Set Up & Treatment - 1 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/69970620-frog-serene-mineral-cartridge-for-hot-tubs](https://www.desertcart.hr/products/69970620-frog-serene-mineral-cartridge-for-hot-tubs) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-14*