--- product_id: 12727885 title: "API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit" brand: "api" price: "£18.45" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/12727885-api-ph-test-and-adjuster-kit-250-test-freshwater-aquarium store_origin: GB region: United Kingdom --- # pH range 6.0 - 7.6 precision 250 tests per kit Includes pH UP & DOWN adjusters API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit **Brand:** api **Price:** £18.45 **Availability:** ✅ In Stock ## Summary > 🐠 Master your aquarium’s pH like a pro—because your fish deserve the best! ## Quick Answers - **What is this?** API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit by api - **How much does it cost?** £18.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/12727885-api-ph-test-and-adjuster-kit-250-test-freshwater-aquarium) ## Best For - api enthusiasts ## Why This Product - Trusted api brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant pH Adjustment:** Includes both pH UP and pH DOWN solutions for immediate water correction—no guesswork. - • **Targeted pH Range 6.0-7.6:** Perfectly calibrated for freshwater aquariums to keep your aquatic ecosystem balanced. - • **Reliable 250-Test Capacity:** Stay ahead with lab-grade testing for months of precise pH monitoring. - • **User-Friendly Kit Components:** Comes complete with test tube, color card, and easy instructions for stress-free weekly checks. - • **Trusted by Aquarists for 60 Years:** Backed by API’s legacy of premium, proven aquarium care products for thriving fish. ## Overview The API pH Test & Adjuster Kit offers 250 precise freshwater aquarium tests, covering a critical pH range of 6.0 to 7.6. It includes easy-to-use testing tools and both pH UP and DOWN solutions, enabling quick adjustments to maintain optimal water conditions. Trusted for nearly six decades, this kit ensures your aquatic pets thrive in a perfectly balanced environment. ## Description Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API Freshwater Aquarium pH Test Kit. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. pH is the measure of acidity of water, on a scale ranging from 0 to 14. A pH of 0 is the most acidic, while a pH of 14 is the most alkaline. Different geographies have different tap water conditions with different pH levels, while fish require a specific pH level to thrive. A pH of 7.0 is ideal when keeping a community aquarium containing a variety of tropical fish. Goldfish and livebearers prefer a pH of 7.5. Many desertcartian fish, like angelfish and neon tetras, prefer a pH of 6.5 to 6.8. Mollies and swordtails thrive at pH 7.2 to 7.5. API Freshwater Aquarium pH Test Kit contains 1 pH test bottle, instructions, capped test tube, and color card for easy pH level testing in freshwater aquariums. API Freshwater Aquarium pH Test Kit test a wide range of pH levels from 6.0 to 9.0. Use the color-coded chart to determine if your water is safe or if adjustments are needed. Then follow the recommendations to treat the water – it's that simple! With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. Review: Easy - Easy & works great Review: Ph Plus - Easy to use and Precise, this kit allows you to choose your desired Ph after you get your first reading, just follow the Directions ## Features - Contains one (1) API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit, including 1 bottle of testing solution, 2 bottles of pH adjuster, 1 color card and 1 test tube with cap - Helps monitor and adjust pH and prevent invisible water problems that can be harmful to fish - Reads pH 6.0 - 7.6 and includes API pH UP and pH DOWN to adjust to proper level - Designed for use in freshwater aquariums only - Use for weekly monitoring and when water or fish problems appear ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001QXR454 | | Allergen Information | Apple Free | | Best Sellers Rank | #2,265 in Pet Supplies ( See Top 100 in Pet Supplies ) #2 in Aquarium Test Kits | | Brand | API | | Brand Name | API | | Customer Reviews | 4.5 out of 5 stars 1,018 Reviews | | Global Trade Identification Number | 00317163020296 | | Item Type Name | Aquarium Test Kit | | Item Weight | 0.4 Pounds | | Manufacturer | Mars Fishcare | | Manufacturer Part Number | 29A | | Model Number | 29A | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 707005137792 317163020296 | | Unit Count | 1 Count | ## Product Details - **Brand:** API - **Global Trade Identification Number:** 00317163020296 - **Item Weight:** 6.4 ounces - **Manufacturer:** Mars Fishcare - **UPC:** 707005137792 317163020296 ## Images ![API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit - Image 1](https://m.media-amazon.com/images/I/81GT+ko3iDL.jpg) ![API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit - Image 2](https://m.media-amazon.com/images/I/91kNIfLlYRL.jpg) ![API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit - Image 3](https://m.media-amazon.com/images/I/71UquKLcD7L.jpg) ![API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit - Image 4](https://m.media-amazon.com/images/I/7140XqnMQnL.jpg) ![API pH TEST & ADJUSTER KIT 250-Test Freshwater Aquarium Water pH Test and Adjuster Kit - Image 5](https://m.media-amazon.com/images/I/81xWFEPdplL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy *by D***D on March 3, 2026* Easy & works great ### ⭐⭐⭐⭐⭐ Ph Plus *by E***D on May 20, 2026* Easy to use and Precise, this kit allows you to choose your desired Ph after you get your first reading, just follow the Directions ### ⭐⭐⭐⭐⭐ Simple to use! *by M***S on March 26, 2026* I have mystery snails and it’s important to keep the pH of the water at a certain level. This kit is a fast, easy way to make sure it stays where it should, and comes with pH up and down so you can correct it immediately. --- ## 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.co.uk/products/12727885-api-ph-test-and-adjuster-kit-250-test-freshwater-aquarium](https://www.desertcart.co.uk/products/12727885-api-ph-test-and-adjuster-kit-250-test-freshwater-aquarium) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-06*