--- product_id: 192039415 title: "25-Pounds Premium Calcium Hardness Increaser for Pools" brand: "pool mate" price: "€ 248.98" currency: EUR in_stock: true category: "Pool Mate" url: https://www.desertcart.pt/products/192039415-25-pounds-premium-calcium-hardness-increaser-for-pools store_origin: PT region: Portugal --- # Fast-acting formula for quick results Rapidly boosts calcium hardness Prevents corrosion & surface etching 25-Pounds Premium Calcium Hardness Increaser for Pools **Brand:** pool mate **Price:** € 248.98 **Availability:** ✅ In Stock ## Summary > 💧 Keep your pool pristine and party-ready with Pool Mate’s calcium power! ## Quick Answers - **What is this?** 25-Pounds Premium Calcium Hardness Increaser for Pools by pool mate - **How much does it cost?** € 248.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/192039415-25-pounds-premium-calcium-hardness-increaser-for-pools) ## Best For - pool mate enthusiasts ## Why This Product - Trusted pool mate brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Corrosion Defense:** Protect your pool’s surfaces from costly damage and staining with optimal calcium levels - • **Safe & Easy Application:** Dissolve in water bucket and pour around pool perimeter while circulating for hassle-free use - • **Fast-Dissolving Granules:** Quickly integrates into your pool water for immediate hardness adjustment - • **Precision Calcium Control:** Easily raise hardness by 10 ppm per 8 oz per 5,000 gallons for perfect pool balance - • **Tailored for Every Pool Type:** Ideal hardness ranges for vinyl, tile, fiberglass, and painted pools ensure customized care ## Overview Pool Mate 25-Pounds Premium Calcium Hardness Increaser is a fast-acting granular formula designed to elevate and maintain ideal calcium hardness levels (200-400 ppm) in all pool types. By preventing corrosion and surface etching, it safeguards your pool’s longevity and appearance. Each 8-ounce dose raises hardness by 10 ppm per 5,000 gallons, ensuring precise, easy adjustments for a crystal-clear, healthy swimming environment. ## Description This is a dry granular product that increases the total hardness in pool water to the recommended range.Test for calcium hardness with a reliable test kit. The desired range for calcium hardness is as follows: Vinyl Pools: 200-300 ppm, Tile and Exposed Aggregate Pools: 200-400 ppm, Marcite, Fiberglass or Painted Pools: 250-400 ppm. If the calcium hardness tests less than the desired range, add this product according to the included chart. Place this product into a plastic bucket already filled with swimming pool water. Do this in a ration of up to 2 pounds of product per approximate 5-gallon bucket of water. Slowly pour this solution around the perimeter of the swimming pool while the circulating system is operating. In a 10,000 gallon pool, do not add more than 10 pounds of this product per 2 hour period. ## Features - Calcium chloride for pools - Rapidly increases total hardness - Helps prevent corrosion or etching of pools - Ideal calcium hardness range 200 - 400 ppm - 8 ounces raises calcium hardness level 10 ppm per 5,000 gallons of water - Prevents the staining or etching of your pool's surface - Low calcium hardness level can cause water issues ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07B7ZBCXQ | | Best Sellers Rank | #3,569 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #206 in Pool Cleaning Tools & Chemicals | | Brand Name | Pool Mate | | Customer Reviews | 4.7 4.7 out of 5 stars (1,361) | | Global Trade Identification Number | 00676215282588 | | Included Components | Pool Calcium Increaser | | Item Form | Granular | | Item Type Name | for Pools | | Item Weight | 25 pounds | | Manufacturer | Pool Mate | | Manufacturer Part Number | 1-2825B | | Model Number | 1-2825B | | Number of Items | 1 | | Package Size Name | 25-Pounds | | Product Benefits | Calcium Increaser | | UPC | 676215282588 034261216146 | | Unit Count | 400 Ounce | ## Product Details - **Brand:** Pool Mate - **Item Form:** Granular - **Item Weight:** 25 pounds - **Product Benefits:** Calcium Increaser - **UPC:** 676215282588 034261216146 ## Images ![25-Pounds Premium Calcium Hardness Increaser for Pools - Image 1](https://m.media-amazon.com/images/I/71FDXA6r7iL.jpg) ![25-Pounds Premium Calcium Hardness Increaser for Pools - Image 2](https://m.media-amazon.com/images/I/41ULKE9lmwL.jpg) ![25-Pounds Premium Calcium Hardness Increaser for Pools - Image 3](https://m.media-amazon.com/images/I/41QEJ36X5lL.jpg) ![25-Pounds Premium Calcium Hardness Increaser for Pools - Image 4](https://m.media-amazon.com/images/I/41DMrxrBq1L.jpg) ![25-Pounds Premium Calcium Hardness Increaser for Pools - Image 5](https://m.media-amazon.com/images/I/41VjSSQnXNL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Pool Mate 1-2825B Calcium Hardness Increaser for Pools, 25-Pounds - Pool Mate 1-2607B Pool Stabilizer for Pools, 7-Pounds - Clorox® Pool&Spa™ Swimming Pool pH Down, Lowers pH, Protects Against Eye and Skin Irritation, 5LB (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.pt/products/192039415-25-pounds-premium-calcium-hardness-increaser-for-pools](https://www.desertcart.pt/products/192039415-25-pounds-premium-calcium-hardness-increaser-for-pools) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-29*