{"product_id":"robelle-25-pounds-premium-pool-calcium-up-calcium-hardness-increaser-for-pools","title":"Robelle 25-Pounds Premium Pool Calcium Up – Calcium Hardness Increaser for Pools","description":"\u003ch2\u003eRobelle 25-Pounds Premium Pool Calcium Up\u003c\/h2\u003e\u003cp\u003eKeep your pool water balanced by raising the total calcium hardness with this dry granular calcium chloride. When hardness is too low, you may see signs of surface wear or increased water aggressiveness. This product is designed to help reach typical ranges tested in many pool types. It dissolves cleanly in a bucket of pool water and is distributed around the pool while the circulation system is running, promoting a more stable balance that supports the pool’s finish and equipment over time.\u003c\/p\u003e\u003cp\u003eDesigned for practical, user friendly use, the formula offers a predictable dosing approach that can fit into routine maintenance routines. A reliable test kit helps you verify calcium hardness and follow a clear dosing chart for measured adjustments. While results can vary with pool size and type, the product is intended to assist you in maintaining balanced water chemistry as part of a comprehensive maintenance plan.\u003c\/p\u003e\u003ch3\u003eKey benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCalcium chloride for pools that raises total hardness quickly.\u003c\/li\u003e\n\u003cli\u003eHelps protect surfaces from corrosion or etching by maintaining balanced water.\u003c\/li\u003e\n\u003cli\u003eIdeal calcium hardness range 200 to 400 ppm, tailored for vinyl, tile, marcite, fiberglass, and painted surfaces.\u003c\/li\u003e\n\u003cli\u003eEach 8 ounces of product raises hardness by about 10 ppm per 5,000 gallons of water, offering a predictable dosing reference.\u003c\/li\u003e\n\u003cli\u003eReference charts guide dosing so you can adjust gradually and avoid overshoot.\u003c\/li\u003e\n\u003cli\u003eLow hardness can lead to common water issues; this product provides a controlled solution to a frequent balance challenge.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUsage tips and dosing steps\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTest calcium hardness with a reliable kit before dosing; confirm your target range for your pool type.\u003c\/li\u003e\n\u003cli\u003ePlace the product in a plastic bucket filled with pool water, stir to dissolve, then slowly pour around the pool perimeter.\u003c\/li\u003e\n\u003cli\u003eOperate the circulating system during application to help even distribution and faster integration.\u003c\/li\u003e\n\u003cli\u003eIn a typical 10,000 gallon pool, do not add more than 10 pounds in a 2 hour window to avoid rapid changes.\u003c\/li\u003e\n\u003cli\u003eFollow the included chart for stepwise adjustments and re-test after each dose, aiming for gradual improvement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePractical note: If the test shows the calcium hardness is below the desired range, apply additional doses as directed by the chart. The process is designed to be controlled, considering the pool size and surface type, allowing you to pursue balanced water without making promises about guaranteed results.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the recommended calcium hardness range for different pool types?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Recommended ranges vary: vinyl 200–300 ppm; tile\/exposed aggregate 200–400 ppm; marcite, fiberglass, or painted pools 250–400 ppm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I use Robelle 25-Pounds Premium Pool Calcium Up?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Dissolve in a bucket of pool water, then pour slowly around the pool while circulating; follow the chart and avoid over-feeding.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Robelle","offers":[{"title":"Default Title","offer_id":45814941909178,"sku":"B07B81QNWS","price":144.35,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/robelle-25lb-pool-calcium-up-granules.jpg?v=1777451824","url":"https:\/\/gardencanada.ca\/products\/robelle-25-pounds-premium-pool-calcium-up-calcium-hardness-increaser-for-pools","provider":"Garden Canada","version":"1.0","type":"link"}