--- product_id: 181285259 title: "Robelle 25-Pounds Premium Pool Calcium Up" brand: "robelle" price: "€ 312.50" currency: EUR in_stock: true reviews_count: 8 category: "Robelle" url: https://www.desertcart.gr/products/181285259-robelle-25-pounds-premium-pool-calcium-up store_origin: GR region: Greece --- # Rapid hardness boost Precise ppm control Prevents corrosion & etching Robelle 25-Pounds Premium Pool Calcium Up **Brand:** robelle **Price:** € 312.50 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your pool’s game with Robelle’s calcium boost — because your oasis deserves the best! ## Quick Answers - **What is this?** Robelle 25-Pounds Premium Pool Calcium Up by robelle - **How much does it cost?** € 312.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/181285259-robelle-25-pounds-premium-pool-calcium-up) ## Best For - robelle enthusiasts ## Why This Product - Trusted robelle brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy & Safe Application:** Dissolves quickly and disperses evenly when added slowly around the pool perimeter with circulation on. - • **Tailored Hardness Range:** Optimized for vinyl, tile, aggregate, fiberglass, and painted pools with a perfect 200-400 ppm target. - • **Trusted Quality & Value:** Highly rated by thousands, Robelle delivers premium pool care without breaking the bank. - • **Instant Calcium Power-Up:** Raises calcium hardness by 10 ppm per 8 oz per 5,000 gallons for fast, effective pool balance. - • **Protect Your Pool’s Integrity:** Prevents corrosion and surface etching, extending the life of your pool’s finish and equipment. ## Overview Robelle 25-Pounds Premium Pool Calcium Up is a granular calcium chloride formula designed to rapidly increase and maintain optimal calcium hardness levels (200-400 ppm) in various pool types. It prevents corrosion and surface damage, ensuring long-lasting pool health. Easy to apply and highly rated, it’s the go-to solution for professional-grade pool water balance. ## 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. Review: ROBELLE GOOD QUALITY AT A GOOD PRICE - Purchased for pool maintenance and works good.I,ve bought ROBELLE chemical items before and there has never been any problems.It dissolved well and helps keep the water in balance. Review: For hardness issues - Improper water hardness is problematic for pool equipment, and if your issue is it's too low, this is an inexpensive fix with almost immediate results. I would recommend taking a water sample someplace that does free testing (almost every pool store) since this is one thing the at home testing steps aren't accurate on. ## 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 | B07B81QNWS | | Best Sellers Rank | #8,439 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #49 in Swimming Pool Balancers | | Brand | Robelle | | Brand Name | Robelle | | Customer Reviews | 4.7 out of 5 stars 607 Reviews | | Global Trade Identification Number | 00034261282592 | | Included Components | Pool Calcium Increaser | | Item Form | Granular | | Item Type Name | for Pools | | Item Weight | 25 pounds | | Manufacturer | Robelle | | Manufacturer Part Number | 2825B | | Model Number | 2825B | | Number of Items | 1 | | Number of Packs | 1 | | Package Size Name | 25-Pounds | | Product Benefits | Calcium Increaser | | UPC | 034261282592 | | Unit Count | 400 Ounce | ## Product Details - **Brand:** Robelle - **Item Form:** Granular - **Item Weight:** 25 pounds - **Product Benefits:** Calcium Increaser - **UPC:** 034261282592 ## Images ![Robelle 25-Pounds Premium Pool Calcium Up - Image 1](https://m.media-amazon.com/images/I/51grRTcWHfL.jpg) ![Robelle 25-Pounds Premium Pool Calcium Up - Image 2](https://m.media-amazon.com/images/I/61K7yR78ZuL.jpg) ![Robelle 25-Pounds Premium Pool Calcium Up - Image 3](https://m.media-amazon.com/images/I/51IIMqU5slL.jpg) ![Robelle 25-Pounds Premium Pool Calcium Up - Image 4](https://m.media-amazon.com/images/I/61PekdjSyBL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ ROBELLE GOOD QUALITY AT A GOOD PRICE *by B***1 on August 29, 2026* Purchased for pool maintenance and works good.I,ve bought ROBELLE chemical items before and there has never been any problems.It dissolved well and helps keep the water in balance. ### ⭐⭐⭐⭐⭐ For hardness issues *by D***L on August 19, 2026* Improper water hardness is problematic for pool equipment, and if your issue is it's too low, this is an inexpensive fix with almost immediate results. I would recommend taking a water sample someplace that does free testing (almost every pool store) since this is one thing the at home testing steps aren't accurate on. ### ⭐⭐⭐⭐⭐ Great Product/ Great Price *by D***N on April 15, 2026* It increased the Pool Calcium level at a great price ## Frequently Bought Together - Robelle 25-Pounds Premium Pool Calcium Up, Calcium Hardness Increaser - Pool Mate 7-Pounds Premium Pool Stabilizer and Conditioner, Concentrated Cyanuric Acid for Pools, Helps Chlorine Last Longer - Natural Chemistry Phosfree, 3-Liter --- ## 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.gr/products/181285259-robelle-25-pounds-premium-pool-calcium-up](https://www.desertcart.gr/products/181285259-robelle-25-pounds-premium-pool-calcium-up) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-09-17*