--- product_id: 393005187 title: "Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound" brand: "pool mate" price: "€ 609.75" currency: EUR in_stock: false reviews_count: 5 category: "Pool Mate" url: https://www.desertcart.sk/products/393005187-pool-mate-1-2804b-calcium-increaser-for-swimming-pools-4 store_origin: SK region: Slovakia --- # Rapid hardness boost Precise ppm control Prevents corrosion & etching Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound **Brand:** pool mate **Price:** € 609.75 **Availability:** ❌ Out of Stock ## Summary > 💧 Keep your pool flawless and FOMO-free with Pool Mate Calcium Increaser! ## Quick Answers - **What is this?** Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound by pool mate - **How much does it cost?** € 609.75 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/393005187-pool-mate-1-2804b-calcium-increaser-for-swimming-pools-4) ## 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 - • **Trusted by Thousands:** 4.7-star rating from 1,400+ pool pros who keep their pools flawless year-round ⭐ - • **Easy & Safe Application:** Granular formula dissolves quickly; add gradually with circulating system on for best results 💧 - • **Protect Your Investment:** Prevents plaster etching and metallic stains for a pristine pool surface 🛡️ - • **Tailored for Every Pool Type:** Ideal calcium range from 200-400 ppm, customized for vinyl, tile, fiberglass & more 📏 - • **Rapidly Elevate Pool Hardness:** Boost calcium levels by 10 ppm per 8 oz for crystal-clear water ⚡ ## Overview Pool Mate 1-2804B Calcium Increaser is a granular calcium chloride formula designed to rapidly raise and maintain optimal calcium hardness levels (200-400 ppm) in swimming pools. It prevents corrosion, etching, and staining by stabilizing water chemistry, ensuring long-lasting pool surface protection. Suitable for all pool types, it offers precise dosing and easy application, backed by a 4.7-star rating from over 1,400 satisfied customers. ## Description Pool Mate Calcium Plus is used to raise calcium hardness levels when measures drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the "soft water" will etch pool plaster and may cause metallic stains. This is a dry granular product that increases the total hardness in pool water to the recommended range. Directions for use: 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 guide below. 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. For 5,000 gallon pool: to increase by 10 ppm add 7.2 oz., to increase by 20 ppm add 14.4 oz., to increase by 30 ppm add 1.35 lbs., to increase by 40 ppm add 1.8 lbs., to increase by 60 ppm add 2.7 lbs., to increase by 80 ppm add 3.6 lbs., to increase by 100 ppm add 4.5 lbs. For 10,000 gallon pool: to increase by 10 ppm add 14.4 oz., to increase by 20 ppm add 1.8 lbs., to increase by 30 ppm add 2.7 lbs., to increase by 40 ppm add 3.6 lbs., to increase by 60 ppm add 5.4 lbs., to increase by 80 ppm add 7.2 lbs., to increase by 100 ppm add 9 lbs. For 20,000 gallon pool: to increase by 10 ppm add 1.8 lbs., to increase by 20 ppm add 3.6 lbs., to increase by 30 ppm add 5.4 lbs., to increase by 40 ppm add 7.2 lbs., to increase by 60 ppm add 10.8 lbs., to increase by 80 ppm add 14.4 lbs., to increase by 100 ppm add 18 lbs. 100% Calcium Chloride Compound. Review: Good product at a very good price. Review: Repeat customer of this product. No complaints. Already does the job at the best price point ## 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 | | Brand Name | Pool Mate | | Customer Reviews | 4.7 4.7 out of 5 stars (1,418) | | Global Trade Identification Number | 00676215282588 | | Included Components | Pool Calcium Increaser | | Item Form | Granular | | Item Type Name | Pool Calcium Increaser | | Item Weight | 11.34 kg | | Manufacturer | Pool Mate | | Product Benefits | Prevents Stains | | UPC | 676215282588 034261216146 | | Unit Count | 400 Grams | ## Product Details - **Brand:** Pool Mate - **Item form:** Granular - **Item weight:** 11.34 kg - **Product benefits:** Prevents Stains - **UPC:** 676215282588 034261216146 ## Images ![Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound - Image 1](https://m.media-amazon.com/images/I/71FDXA6r7iL.jpg) ![Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound - Image 2](https://m.media-amazon.com/images/I/71ywrYQMT4L.jpg) ![Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound - Image 3](https://m.media-amazon.com/images/I/71hD6NSppDL.jpg) ![Pool Mate 1-2804B Calcium Increaser for Swimming Pools, 4-Pound - Image 4](https://m.media-amazon.com/images/I/71YTya1JK5L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by O***O on 2 March 2026* Good product at a very good price. ### ⭐⭐⭐⭐⭐ Review *by W***M on 7 December 2025* Repeat customer of this product. No complaints. Already does the job at the best price point ### ⭐⭐⭐⭐⭐ Review *by D***P on 5 November 2025* Good stuff. Works well with my salt water pool and helps maintain the right chemical balance. Easy to use. Will be buying again next pool season! ## 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.sk/products/393005187-pool-mate-1-2804b-calcium-increaser-for-swimming-pools-4](https://www.desertcart.sk/products/393005187-pool-mate-1-2804b-calcium-increaser-for-swimming-pools-4) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-06-06*