--- product_id: 53170368 title: "NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life." brand: "nt labs" price: "¥13135" currency: JPY in_stock: true reviews_count: 8 category: "Nt Labs" url: https://www.desertcart.jp/products/53170368-nt-labs-koi-care-gh-minerals-up-1-5kg-essential store_origin: JP region: Japan --- # Optimizes fish habitat Safely boosts GH levels Precise dosage with calculator NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. **Brand:** nt labs **Price:** ¥13135 **Availability:** ✅ In Stock ## Summary > 💧 Elevate Your Pond’s Hardness, Elevate Your Fish’s Life! ## Quick Answers - **What is this?** NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. by nt labs - **How much does it cost?** ¥13135 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/53170368-nt-labs-koi-care-gh-minerals-up-1-5kg-essential) ## 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 - • **Effortless Pond Care:** Simple powder formula dissolves easily; just measure your pond volume and apply with confidence. - • **For Every Pond Keeper:** Designed for beginners and pros alike, making premium pond care accessible to all. - • **Crystal Clear Water, Always:** Formulated to increase GH without clouding your pond water, keeping your aquatic environment pristine. - • **Data-Driven Pond Management:** Pair with NT Labs Hardness Test Kit to maintain GH above 8 dGH for peak water quality. - • **Scientifically Balanced Hardness:** Enriched with essential calcium and magnesium minerals to support fish metabolism and growth. ## Overview NT Labs Koi Care GH Minerals Up is a 1.5kg powder formula that safely increases the general hardness (GH) of pond water by adding essential calcium and magnesium minerals. It supports optimal fish health and pond ecosystem balance without clouding water. Easy to dose using pond volume calculations or an online calculator, it’s ideal for all pond keepers and works best when combined with NT Labs Hardness Test Kits to maintain GH levels above 8 dGH. ## Description Product Description Review: Really good - Really good. Doesn't cloud the water like some gh buffers do and excellent value Review: Good - Good product & good price Good service 👍 ## Features - 【SAFELY INCREASES GENERAL HARDNESS】: NT Labs GH Minerals Up safely increases the GH providing an optimal habitat for your fish and other pond life. - 【BOOSTS GH LEVELS IN YOUR POND】: General hardness minerals such as calcium and magnesium are essential for aquatic biological functions. Such minerals are used in fish growth, metabolism and other physiological functions. General hardness minerals can decrease over time due to influx of rainwater, soft tap water and biological processes using these minerals. - 【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 GH of the pond water. Always keep the GH above 8 dGH for optimal water quality. GH Minerals Up can also be used to provide additional general hardness where tap water is naturally low in hardness minerals. - 【 SUITABLE FOR ALL POND KEEPERS 】: The ease of use of Koi Care GH Minerals Up means it is perfect for use by beginners and seasoned pond keepers alike. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00AHA2HIQ | | Best Sellers Rank | 77,739 in Garden ( See Top 100 in Garden ) 356 in Water Garden & Pond Treatment | | Brand | NT Labs | | Brand Name | NT Labs | | Customer Reviews | 4.6 out of 5 stars 61 Reviews | | Included Components | Powder | | Item Form | Powder | | Item Type Name | Pond Fish Food | | Item Weight | 600 Grams | | Item form | Powder | | Item weight | 600 Grams | | Liquid Volume | 1.5 Kilograms | | Liquid volume | 1.5 Kilograms | | Manufacturer | NT Labs | | Manufacturer Part Number | 00425 | | Model Number | NT Labs | | Target Species | Fish | | UPC | 733809004251 | | Unit Count | 5000.0 gram | | Unit count | 5000.0 gram | ## Product Details - **Brand:** NT Labs - **Item form:** Powder - **Item weight:** 600 Grams - **Liquid volume:** 1.5 Kilograms - **Manufacturer:** NT Labs ## Images ![NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. - Image 1](https://m.media-amazon.com/images/I/71Th01lr4iL.jpg) ![NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. - Image 2](https://m.media-amazon.com/images/I/71d5843yOPL.jpg) ![NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. - Image 3](https://m.media-amazon.com/images/I/81RSR5fMsIL.jpg) ![NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. - Image 4](https://m.media-amazon.com/images/I/81JueCyXP3L.jpg) ![NT Labs Koi Care GH Minerals Up (1.5kg) | Essential mineral elements increase general hardness of pond water to maintain an optimal habitat for pond life. - Image 5](https://m.media-amazon.com/images/I/71uRXyDc5CL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can you use with pump feed ponds** A: Yes. No probs. As far as i understand its also benificial to your filter . Used it for a couple of years now along with kh up. And koi clay. All good . **Q: What’s is a ratio mg to ca ?** A: No idea, all I do know if the water hardeness is well below the 8dh level the pond quality will function less,due to a depletion of minerals in the water, which in turn can affect the fish plus the PH level, best contact NT labs for more information, that's why I check mine on a regular basis along with other chemical tests ## Customer Reviews ### ⭐⭐⭐⭐⭐ Really good *by G***R on 2 May 2026* Really good. Doesn't cloud the water like some gh buffers do and excellent value ### ⭐⭐⭐⭐⭐ Good *by T***S on 12 June 2026* Good product & good price Good service 👍 ### ⭐⭐⭐⭐⭐ A good service and a good quality product which corrected my ... *by Z***O on 16 March 2015* A good service and a good quality product which corrected my garden pond water hardness in a very short 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.jp/products/53170368-nt-labs-koi-care-gh-minerals-up-1-5kg-essential](https://www.desertcart.jp/products/53170368-nt-labs-koi-care-gh-minerals-up-1-5kg-essential) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-03*