--- product_id: 100755711 title: "NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg" brand: "nt labs" price: "€ 97.90" currency: EUR in_stock: true reviews_count: 8 category: "Nt Labs" url: https://www.desertcart.hr/products/100755711-nt-labs-koi-care-kh-buffer-up-increases-carbonate-hardness store_origin: HR region: Croatia --- # Stabilizes pH with carbonate hardness Compatible with NT Labs Test Kits Precise dosing via volume calculation NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg **Brand:** nt labs **Price:** € 97.90 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your pond’s health—because your koi deserve the best habitat! ## Quick Answers - **What is this?** NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg by nt labs - **How much does it cost?** € 97.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/100755711-nt-labs-koi-care-kh-buffer-up-increases-carbonate-hardness) ## Best For - nt labs enthusiasts ## Why This Product - Trusted nt labs brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Friendly Dosage System:** Calculate pond volume easily and dissolve powder for hassle-free application every time. - • **Perfect for All Pond Keepers:** Ideal for beginners and pros alike, making pond care simple and effective. - • **Safe & Stable pH Environment:** Maintains optimal carbonate hardness to prevent harmful pH swings and keep your pond fish thriving. - • **Test & Monitor with Confidence:** Works seamlessly with NT Labs Hardness Test Kits to ensure KH stays above 6 dKH for peak pond health. - • **Boosts Carbonate Hardness Efficiently:** Replenishes essential minerals to sustain a healthy aquatic habitat and water quality. ## Overview NT Labs Koi Care KH Buffer Up is a 5kg powder designed to safely increase and maintain carbonate hardness (KH) in pond water, stabilizing pH levels to create an optimal environment for fish and pond life. Easy to dose based on pond volume and compatible with NT Labs test kits, it ensures consistent water quality and supports healthy aquatic ecosystems for both novice and experienced pond keepers. ## Description Product Description Review: Great product. - This product works great, it brings my soft water up to the level I need. Review: Really good product - our fish just love it - Our fish love it ## Features - 【SAFELY INCREASES CARBONATE HARDNESS】: Pond fish require a safe and stable pH to remain healthy. As pond water ages, fish waste and other organic matter uses up the carbonate hardness (KH) that provides this safe and stable pH. If left unchecked, a low KH can lead to unstable water quality, a sudden drop in pH and serious illness in fish. - 【BOOSTS KH LEVELS IN YOUR POND】NT Labs KH – Buffer Up replenishes these essential minerals leading to a safe and stable environment. - 【EASY TO USE】: To work out the required dosage for your pond, simply calculate the volume of your pond in litres (length x width x depth (in cm)/1000) or alternatively, use our Online Dosage Calculator. Dissolve the powder in a bucket of pond water before adding to the pond. - 【USE IN CONJUNCTION WITH NT LABS TEST KITS】: Use NT Labs Hardness Test Kit to measure the KH of the pond water. Always keep the KH above 6 dKH for optimal water quality. KH – Buffer Up can also be used to provide additional carbonate hardness where tap water is naturally low in hardness minerals. - 【 SUITABLE FOR ALL POND KEEPERS 】: The ease of use of Koi Care KH Buffer Up means it is perfect for use by beginners and seasoned pond keepers alike. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008DVY5JK | | Best Sellers Rank | 10,658 in Garden ( See Top 100 in Garden ) 93 in Water Garden & Pond Treatment | | Brand | NT Labs | | Brand Name | NT Labs | | Country Of Origin | United Kingdom | | Customer Reviews | 4.5 out of 5 stars 188 Reviews | | Included Components | Powder | | Item Form | Powder | | Item Type Name | Pond Fish Food | | Item Weight | 5 Kilograms | | Item form | Powder | | Item weight | 5 Kilograms | | Manufacturer | NT Labs | | Manufacturer Part Number | 00428 | | Model Number | NT Labs | | Target Species | Fish | | UPC | 733809004282 | | Unit Count | 5000.0 gram | | Unit count | 5000.0 gram | ## Product Details - **Brand:** NT Labs - **Item form:** Powder - **Item weight:** 5 Kilograms - **Manufacturer:** NT Labs - **UPC:** 733809004282 ## Images ![NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg - Image 1](https://m.media-amazon.com/images/I/711rYoBVHFL.jpg) ![NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg - Image 2](https://m.media-amazon.com/images/I/719vb7mZCIL.jpg) ![NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg - Image 3](https://m.media-amazon.com/images/I/81WOLCYeLkL.jpg) ![NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg - Image 4](https://m.media-amazon.com/images/I/81JueCyXP3L.jpg) ![NT Labs Koi Care KH Buffer Up, Increases Carbonate Hardness of Pond Water, Maintains Pond Water Quality, Provides the Optimal Habitat for Your Fish and Other Pond Life, 5kg - Image 5](https://m.media-amazon.com/images/I/71XK--Pge7L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product. *by A***R on 14 July 2025* This product works great, it brings my soft water up to the level I need. ### ⭐⭐⭐⭐⭐ Really good product - our fish just love it *by M***E on 30 March 2025* Our fish love it ### ⭐⭐⭐⭐ Pond treatment *by P***N on 6 November 2023* Happy with purchase and the delivery time --- ## 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.hr/products/100755711-nt-labs-koi-care-kh-buffer-up-increases-carbonate-hardness](https://www.desertcart.hr/products/100755711-nt-labs-koi-care-kh-buffer-up-increases-carbonate-hardness) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-03*