--- product_id: 1627314 title: "FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored" brand: "api" price: "€ 74.57" currency: EUR in_stock: true category: "Api" url: https://www.desertcart.sk/products/1627314-freshwater-master-test-kit-800-test-freshwater-aquarium-water-master store_origin: SK region: Slovakia --- # 7 solution bottles + color card 5 vital water parameters 800 tests capacity FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored **Brand:** api **Price:** € 74.57 **Availability:** ✅ In Stock ## Summary > 🐠 Master your aquarium’s health with science-backed precision! ## Quick Answers - **What is this?** FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored by api - **How much does it cost?** € 74.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/1627314-freshwater-master-test-kit-800-test-freshwater-aquarium-water-master) ## 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 - • **Trusted Legacy:** Backed by nearly 60 years of API expertise, ensuring premium quality and proven results for your aquatic ecosystem. - • **Long-lasting Value:** Supports up to 800 tests, making weekly monitoring affordable and sustainable for serious aquarists. - • **Comprehensive Testing Kit:** Includes 7 solution bottles, 4 test tubes with caps, and a laminated color card for easy, reliable readings. - • **Precision at Your Fingertips:** Scientifically calibrated to measure pH, high range pH, ammonia, nitrite, and nitrate with professional accuracy. - • **Prevent Fish Loss Before It Happens:** Detect invisible water quality issues early to reduce stress and disease risk in your freshwater aquarium. ## Overview The API Freshwater Master Test Kit offers up to 800 precise tests to monitor five critical water parameters—pH, high range pH, ammonia, nitrite, and nitrate—in freshwater aquariums. Equipped with seven solution bottles, four test tubes, and a color card, it empowers aquarium enthusiasts to detect invisible water problems early, preventing fish stress and loss. Trusted for nearly six decades, this kit combines professional accuracy with long-lasting value, making it an essential tool for maintaining a thriving aquatic environment. ## Description Most water problems are invisible to the eye. Quickly measure and modify the six aquarium levels that are most important to the health of your freshwater fish with the API FRESHWATER MASTER TEST KIT. To stay healthy and thrive, fish need properly balanced levels of ammonia, pH, high range pH, nitrite and nitrate. These levels can change rapidly and create harmful conditions when fish waste, uneaten food or other organic matter accumulate, or when untreated water is added. If left uncorrected, all of these can be harmful or even fatal to fish, with consequences such as reduction of oxygen, increase in stress and higher risk of disease. The API FRESHWATER MASTER TEST KIT measures these six parameters with scientific accuracy and provides professional results. It comes with four test tubes, a holding tray and computer calibrated, laminated color card. Just fill the test tubes, add the test drops and compare results to the color card. Then follow the recommendations on the card if action is required. 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. ## Features - Contains one (1) API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, including 7 bottles of testing solutions, 1 color card and 4 tubes with cap - Helps monitor water quality and prevent invisible water problems that can be harmful to fish and cause fish loss - Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite, nitrate - Designed for use in freshwater aquariums only - Use for weekly monitoring and when water or fish problems appear ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000255NCI | | ASIN | B000255NCI | | Best Sellers Rank | #6,504 in Pet Supplies ( See Top 100 in Pet Supplies ) #8 in Aquarium Test Kits | | Brand Name | API | | Color | Multi-color | | Customer Reviews | 4.8 4.8 out of 5 stars (31,232) | | Date First Available | June 20, 2004 | | Date First Available | June 20, 2004 | | Department | Unisex-Adult | | Department | Unisex-Adult | | Directions | Follow the instructional booklet directions for individual testing of each water parameter, and test weekly for best results. | | Included Components | API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 9.13 x 3.5 x 4.65 inches | | Item Package Dimensions L x W x H | 6.54 x 4.96 x 4.17 inches | | Item Weight | 521.63 Grams | | Item model number | 34 | | Item model number | 34 | | Manufacturer | Mars Fishcare | | Manufacturer | Mars Fishcare | | Material | Plastic | | Model Name | API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored | | Number of Items | 1 | | Product Dimensions | 9.13 x 3.5 x 4.65 inches; 1.15 Pounds | | Size | Single | | Style | Freshwater | | Target Audience Keyword | fish | | Warranty Description | Warranty | ## Images ![FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored - Image 1](https://m.media-amazon.com/images/I/61Kd-mEEjXL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: How many tests can be run with this kit?** A: About 120. Problem is that if you use the full set of products daily you will quickly run out of the ammonia test and the Nitrates tests (each with 2 bottles) because they take 8-10 drops each, compared to the Ph test which only takes 3 drops. I mainly test ammonia and nitrites so I've had to buy separate ammonia kits twice now because I ran out of fluid, while my high range ph bottle is nearly full. Also - Prime, AmGuard and other products convert Ammonia into harmless Ammonium however, it will still read as ammonia on your API kit - so it's basically lying to you. There are kits that will show you active ammonia and harmless ammonium and my API kit reads 8.0 ammonia but the other kit reads it as all harmless ammonium and zero active ammonia. You have do dose your tank with Prime every 48 hours or less to keep the ammonium from converting back to killer ammonia. This will keep happening until your tank finally converts the ammonium to nitrites. My 2 of my 4 well-cycled tanks somehow lost their cycling so that's not happening for those tanks yet. **Q: I'm a newbie. I have a betta in 10G tank and I'm told that I need to test the water always.Not sure if I should get this or get cheaper ones instead.** A: Frankly, with a 10G tank you should just be doing weekly water changes of at least 25-30%. You can't really "let things go" with a tank that size and it's unlikely that you would have ammonia spikes with such frequent water changes. I have a little 5.5 gallon with a couple of albino cory cats and I use a test strip every once in a blue moon, but the water is always fine because I do weekly changes. Am looking at this kit for my 125 gallon tank, but would bother for a tiny tank. **Q: Would this kit be a good one for my planted aquarium?** A: Yes, this is a good general water testing kit, unless you have plants that are very sensitive to water hardness. This kit does NOT include a water-hardness tester. **Q: Can any of these tests be used for both saltwater and freshwater? I noticed a lot of the individually packaged tests say they can be used for both.** A: Api ammonia, nitrite and nitrate test kits can be used for both salt and fresh water aquariums, the liquid solutions are the same for salt and fresh. BUT the color cards that you use to compare your test to are slightly different. I have both fresh water and marine. The first time I bought these kits, I bought for saltwater and freshwater and never threw away the color cards. Now it doesn't matter if I get freshwater or saltwater test kits because I have both freshwater and saltwater cards. ## Frequently Bought Together - API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored - PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic - Tetra Water Cleaner Gravel Siphon for Aquariums, Easily Clean Freshwater Aquariums --- ## 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.sk/products/1627314-freshwater-master-test-kit-800-test-freshwater-aquarium-water-master](https://www.desertcart.sk/products/1627314-freshwater-master-test-kit-800-test-freshwater-aquarium-water-master) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-06-18*