--- product_id: 389867831 title: "12204CLX Calcium Hardness Increaser, 4 lb, White" brand: "clorox pool&spa" price: "Rp1948924" currency: IDR in_stock: true reviews_count: 5 url: https://www.desertcart.id/products/389867831-12204clx-calcium-hardness-increaser-4-lb-white store_origin: ID region: Indonesia --- # Extends pool equipment lifespan Raises hardness by 50 ppm per 5 lbs Prevents corrosion & staining 12204CLX Calcium Hardness Increaser, 4 lb, White **Brand:** clorox pool&spa **Price:** Rp1948924 **Availability:** ✅ In Stock ## Summary > 🛁 Elevate your pool game—because your oasis deserves the best! ## Quick Answers - **What is this?** 12204CLX Calcium Hardness Increaser, 4 lb, White by clorox pool&spa - **How much does it cost?** Rp1948924 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/389867831-12204clx-calcium-hardness-increaser-4-lb-white) ## Best For - clorox pool&spa enthusiasts ## Why This Product - Trusted clorox pool&spa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Pool Care:** Pair with the Clorox Pool App for expert testing and personalized dosage recommendations anytime, anywhere. - • **Soft Water Savior:** Specifically formulated for plaster pools and soft water areas to restore and stabilize water chemistry. - • **Durability Amplifier:** Extend the life of your pool surfaces and equipment by maintaining ideal water hardness levels. - • **Precision Hardness Boost:** Easily raise your pool’s calcium hardness by 50 ppm per 5 lbs for perfectly balanced water. - • **Ultimate Surface Protection:** Shield your pool from corrosion, etching, and unsightly stains—keep it pristine season after season. ## Overview Clorox Pool&Spa Calcium Hardness Increaser is a granular formula designed to raise low total hardness levels by 50 ppm per 5 lbs, preventing corrosion, staining, and etching in plaster and soft water pools. Trusted by thousands with a 4.8-star rating, it extends pool equipment life and integrates seamlessly with the Clorox Pool App for expert maintenance. ## Description Clorox Pool&Spa Calcium Hardness Increaser raises low Total Hardness levels in your swimming pool that can cause damage to your pool surface. Ideal for plaster pools & soft water areas. Use it to raise Total Hardness levels in your pool that are below 175 ppm. Increasing Total Hardness in your pool prevents surface damage like corrosion, staining, and etching. 5 lbs. per 10, 000 gallons will raise increase your Total Hardness levels by 50 ppm. Review: Works great and priced really good compared to other brands Review: I used this in my hot tub to harden the city water. Worked just as good as the expensive stuff from there and was bigger volume in bag verses their little bottle of it. ## Features - Prevents Corrosion, Etching, and Staining: With Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser, you can safeguard your pool against corrosion, etching, and staining, ensuring its longevity and pristine appearance. Our product offers reliable protection, giving you peace of mind while you enjoy your pool. - Increases Low Total Hardness Levels: This product helps increase the low total hardness levels in swimming pool water, ensuring a balanced and stable environment for your pool. It restores water parameters to their ideal ranges. - Extends Equipment Life: Unbalanced water can cause a corrosive environment that damages your pool surfaces or equipment. This product prevents pool surface damage, reduces pool maintenance, extending the life of your pool's cleanliness. - Compatibility: Our Clorox Pool&Spa Swimming Pool Calcium Hardness Increaser is ideal for plaster pools and areas with soft water. - Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B084GQH8YF | | Brand Name | CLOROX Pool&Spa | | Customer Reviews | 4.8 4.8 out of 5 stars (4,788) | | Global Trade Identification Number | 00810821023108 | | Included Components | Includes: 1 x Pool&Spa 12204CLX Calcium Hardness Increaser, 4 lb | | Item Form | Granular | | Item Type Name | Calcium Hardness Increaser, 4 lb. | | Item Weight | 1.81 kg | | Manufacturer | Clorox Pool&Spa | | Product Benefits | Prevents Corrosion, Prevents Staining | | UPC | 810821023108 | | Unit Count | 64 Grams | ## Product Details - **Brand:** CLOROX Pool&Spa - **Item form:** Granular - **Item weight:** 1.81 kg - **Product benefits:** Prevents Corrosion, Prevents Staining - **UPC:** 810821023108 ## Images ![12204CLX Calcium Hardness Increaser, 4 lb, White - Image 1](https://m.media-amazon.com/images/I/71E4MrOqgkL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by Y***R on 15 October 2025* Works great and priced really good compared to other brands ### ⭐⭐⭐⭐⭐ Review *by C***E on 16 June 2025* I used this in my hot tub to harden the city water. Worked just as good as the expensive stuff from there and was bigger volume in bag verses their little bottle of it. ### ⭐⭐⭐⭐⭐ Review *by D***T on 29 October 2025* I have used this and satisfied. Big savings over the pool store prices. ## Frequently Bought Together - Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1) - Clorox® Pool&Spa™ Swimming Pool Alkalinity Increaser, Keeps pH Balanced, 5LB (Pack of 1) - Clorox® Pool&Spa™ Swimming Pool Chlorine Stabilizer, Helps Chlorine Last Longer, Saltwater Pool Compatible, 4LB (Pack of 1) --- ## 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.id/products/389867831-12204clx-calcium-hardness-increaser-4-lb-white](https://www.desertcart.id/products/389867831-12204clx-calcium-hardness-increaser-4-lb-white) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-14*