--- product_id: 64688996 title: "Calcium Hardness (CH) Raiser 1kg" brand: "aquasparkle" price: "€ 37.78" currency: EUR in_stock: true reviews_count: 6 category: "Aquasparkle" url: https://www.desertcart.gr/products/64688996-calcium-hardness-ch-raiser-1kg store_origin: GR region: Greece --- # Fast-dissolving granules Raises calcium hardness above 100 ppm Protects hot tub from corrosion Calcium Hardness (CH) Raiser 1kg **Brand:** aquasparkle **Price:** € 37.78 **Availability:** βœ… In Stock ## Summary > πŸ› Elevate your spa gameβ€”because your hot tub deserves VIP treatment! ## Quick Answers - **What is this?** Calcium Hardness (CH) Raiser 1kg by aquasparkle - **How much does it cost?** € 37.78 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/64688996-calcium-hardness-ch-raiser-1kg) ## Best For - aquasparkle enthusiasts ## Why This Product - Trusted aquasparkle brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Corrosion Defense:** Boost calcium hardness to shield your hot tub’s surfaces and equipment πŸ›‘οΈ - β€’ **Soft Water Savior:** Specifically designed to prevent damage in low-mineral water areas πŸ“ˆ - β€’ **Guided Maintenance:** On-pack QR codes link to expert how-to videos for flawless application πŸŽ₯ - β€’ **Effortless Spa Protection:** Fast-acting granules dissolve quickly for instant water balance ⚑ - β€’ **Precision Chemistry Control:** Easily adjust alkalinity and pH after treatment for perfect water harmony βš–οΈ ## Overview AQUASPARKLE Calcium Hardness Raiser is a 1kg fast-dissolving granular formula that quickly increases calcium hardness levels to above 100 mg/L, protecting hot tubs from corrosion and equipment damage, especially in soft water areas. Featuring on-pack QR codes for step-by-step video guidance, it ensures easy, precise water chemistry management for a longer-lasting, pristine spa experience. ## Description Product description Protect your hot tub and equipment from corrosive water with AquaSPArkle Hardness Plus. This fast-acting granular formula quickly raises calcium hardness levels, helping to prevent damage to surfaces and internal components. Ideal for maintaining balanced water chemistry, especially in soft water areas, when levels fall below 100mg/l (ppm). For simple step-by-step guidance, scan the on-pack QR code and follow our handy video instructions! Directions Pre-dissolve AquaSPArkle Spa Hardness Plus in a clean plastic container at a maximum rate of 10g of product per 1ltr of clean cold water. Stir well to ensure product is fully dissolved. Add the resulting solution to the spa whilst the pump(s) are turned 'on'. Next adjust the Total Alkalinity and buffer the pH (this stops the PH value fluctuating rapidly). Finally, adjust the PH and, if required, adjust the Hardness. Review: A great price for this product - A great price for this and it helps keep the water really nice in the hot tub. Review: As expected - As expected ## Features - Causes serious eye irritation. - Now featuring on-pack QR codes linking to helpful "how-to" videos - Increases calcium hardness to protect your hot tub - Prevents corrosion and equipment damage in soft water areas - Easy-to-use, fast-dissolving granules ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BEEHKQI | | Benefits | Easy-to-use, fast-dissolving granules, Increases calcium hardness to protect your hot tub, Prevents corrosion and equipment damage in soft water areas | | Best Sellers Rank | 96,357 in Garden ( See Top 100 in Garden ) 118 in Pool Balancers | | Brand | AQUASPARKLE | | Brand Name | AQUASPARKLE | | Customer Reviews | 4.5 out of 5 stars 109 Reviews | | Global Trade Identification Number | 05060149800935 | | Item Form | Granular | | Item Weight | 1 Kilograms | | Item form | Granular | | Item weight | 1 Kilograms | | Manufacturer | AquaSparkle | | Number of Items | 1 | | Number of items | 1 | | Product benefits | Easy-to-use, fast-dissolving granules, Increases calcium hardness to protect your hot tub, Prevents corrosion and equipment damage in soft water areas Product benefits Easy-to-use, fast-dissolving granules, Increases calcium hardness to protect your hot tub, Prevents corrosion and equipment damage in soft water areas See more | | Unit Count | 1000 gram | ## Product Details - **Brand:** AQUASPARKLE - **Global Trade Identification Number:** 05060149800935 - **Item form:** Granular - **Item weight:** 1 Kilograms ## Images ![Calcium Hardness (CH) Raiser 1kg - Image 1](https://m.media-amazon.com/images/I/51u-vcucWKL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A great price for this product *by R***G on 28 February 2025* A great price for this and it helps keep the water really nice in the hot tub. ### ⭐⭐⭐⭐⭐ As expected *by V***. on 26 September 2022* As expected ### ⭐⭐⭐⭐ Good product but postage took a very long time *by L***D on 27 November 2020* Updated I have now received item royal mail delay in posting so not sellers fault the item is brilliant many thanks --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/64688996-calcium-hardness-ch-raiser-1kg](https://www.desertcart.gr/products/64688996-calcium-hardness-ch-raiser-1kg) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-09-02*