--- product_id: 71225598 title: "API Fresh Water Master Test Kit, 1 Piece" brand: "api" price: "€ 127.49" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.at/products/71225598-api-fresh-water-master-test-kit-1-piece store_origin: AT region: Austria --- # Scientifically validated precision Quick & accurate results 5 critical water parameters tested API Fresh Water Master Test Kit, 1 Piece **Brand:** api **Price:** € 127.49 **Availability:** ✅ In Stock ## Summary > 🐠 Master your aquarium’s health with precision and speed! ## Quick Answers - **What is this?** API Fresh Water Master Test Kit, 1 Piece by api - **How much does it cost?** € 127.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/71225598-api-fresh-water-master-test-kit-1-piece) ## 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 by Aquarists:** Preferred choice for serious hobbyists and pros alike - • **Compact & Ready-to-Use:** All-in-one kit designed for easy, on-the-spot testing - • **Fast & Efficient Testing:** Get critical water data quickly to keep your aquarium thriving - • **Professional-Grade Accuracy:** Scientifically formulated for reliable, lab-quality results - • **Comprehensive Water Analysis:** Test pH, High Range pH, Ammonia, Nitrite & Nitrate in one kit ## Overview The API Fresh Water Master Test Kit offers a professional-grade solution for monitoring five essential water parameters—pH, High Range pH, Ammonia, Nitrite, and Nitrate—ensuring your freshwater aquarium stays balanced and healthy. Designed in the USA, this compact kit delivers quick, scientifically accurate results trusted by aquarists worldwide. ## Description From the manufacturer It’s Smart to be Proactive! The best way to keep your aquarium clean is to maintain good water quality. This will keep your fish strong and vibrant, as well as preventing disease. How Do I Maintain a Healthy Environment? It is important to test your aquarium water weekly to verify good quality in addition to a bi-weekly partial water change of no more than 25% to help reduce toxic buildup, remove debris the filter missed, and replenish the oxygen available to fish. How Do I Take Good Care Of My Aquarium & Fish? Feed & observe fish daily Test water quality weekly Change 25% water bi-weekly Restore your ecosystem monthly Feed Your Fish Daily Feed your fish twice daily with API Fish Food which contains nutritionally enhanced proteins, allowing for easy uptake of nutrients and maximum absorption, resulting in less excrement for clear, clean water. Only give the amount of food fish can eat in 2 to 3 minutes depending on the species. Some fish such as bottom feeders and algae eaters will need up to 30 minutes to 2 hours. Take time to observe fish and the water temperature to ensure they are active & healthy. Test Water Quality Weekly An aquarium is a closed environment and in order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even loss. The 5 common water quality parameters are Ammonia, Nitrite, Nitrate, and pH - all of which may vary over time and all are invisible to the eye which is why it is important to test weekly with API Master Test Kits or API 5-In-1 Test Strips. It is also a good time to add API Stress Zyme to keep your aquarium & gravel clean. Change 25% Water Every 2 Weeks In a closed aquarium environment there are no natural rivers or streams to carry away debris and other waste materials. It is important to renew 25% of the aquarium water every two weeks. When you change the water, it is important to know that tap water contains chemicals that make it safe for us to drink but harmful for fish, therefore add a water conditioner such as API Stress Coat. Restore Your Ecosystem Monthly It is important to change your filter media & clean gravel monthly, however in doing so it can disrupt the fragile ecosystem of your aquarium. Use API Quick Start to strengthen it with ‘beneficial’ nitrifying bacteria that will naturally consume toxic compounds and help prevent fish stress. Also recommended when starting a new aquarium or changing the water. Making A Better Underwater World At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For over 50 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. Review: Good 👍 - Good 👍 Work's Well Review: Quick and accurate results. Must for your aquarium - This product is excellent and provides very quick and accurate results. You just need to follow the instructions as per the manual and the test results will come quite accurate. The box includes: 1. Chemical reagents to perform all the tests mentioned - PH, High PH, Ammonia, Nitrite, Nitrate 2. 4 Test Tubes 3. Manual and Color chart The color chart is very helpful and the manual explains very clearly how to understand the results based on the color. The PH results come immediately. For Ammonia/Nitrite/Nitrate, you need to wait for 5 minutes. In a well cycled tank - Ammonia and Nitrite must be 0ppm(VERYImportant) and Nitrate also within acceptable limits. This is a must for any aquarium and specially useful for any new tank setups where you need to monitor the water conditions regularly during the cycling process. Based on the results, you can take decision for water changes. Best Master Test Kit available !!!! Go for it. ## Features - Measures the most important aquarium levels quickly and accurately - Tests pH, High Range pH, Ammonia, Nitrite & Nitrate - Scientifically accurate for professional results ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000255NCI | | Best Sellers Rank | #5,505 in Pet Supplies ( See Top 100 in Pet Supplies ) #24 in Test Kits | | Country of Origin | USA | | Item Dimensions LxWxH | 23.2 x 8.9 x 11.8 Centimeters | | Item Weight | 522 g | | Item model number | 34 | | Manufacturer | MARS FISHCARE NORTH AMERICA .inc | | Net Quantity | 1 Count | | Product Dimensions | 23.2 x 8.9 x 11.8 cm; 521.63 g | ## Images ![API Fresh Water Master Test Kit, 1 Piece - Image 1](https://m.media-amazon.com/images/I/61Kd-mEEjXL.jpg) ![API Fresh Water Master Test Kit, 1 Piece - Image 2](https://m.media-amazon.com/images/I/71+NJAMw1uL.jpg) ![API Fresh Water Master Test Kit, 1 Piece - Image 3](https://m.media-amazon.com/images/I/41wXDcnVWVL.jpg) ![API Fresh Water Master Test Kit, 1 Piece - Image 4](https://m.media-amazon.com/images/I/71WlieRyn8L.jpg) ![API Fresh Water Master Test Kit, 1 Piece - Image 5](https://m.media-amazon.com/images/I/71WMhcD89sL.jpg) ## 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good 👍 *by S***B on 11 January 2026* Good 👍 Work's Well ### ⭐⭐⭐⭐⭐ Quick and accurate results. Must for your aquarium *by A***C on 1 July 2020* This product is excellent and provides very quick and accurate results. You just need to follow the instructions as per the manual and the test results will come quite accurate. The box includes: 1. Chemical reagents to perform all the tests mentioned - PH, High PH, Ammonia, Nitrite, Nitrate 2. 4 Test Tubes 3. Manual and Color chart The color chart is very helpful and the manual explains very clearly how to understand the results based on the color. The PH results come immediately. For Ammonia/Nitrite/Nitrate, you need to wait for 5 minutes. In a well cycled tank - Ammonia and Nitrite must be 0ppm(VERYImportant) and Nitrate also within acceptable limits. This is a must for any aquarium and specially useful for any new tank setups where you need to monitor the water conditions regularly during the cycling process. Based on the results, you can take decision for water changes. Best Master Test Kit available !!!! Go for it. ### ⭐⭐⭐⭐ Good tester *by P***R on 17 June 2021* It's nice but expensive tool to establish your tank parameters. Which is sometimes confusing as decoding is based on visual color matching which turns out to be extremely confusing and tricky when you get different colours which are not in the reference color table...this forces you to do guesswork... So far for me its approximately 65% clear report and 35% guess report...shall use this till we get better kit than this... Note: I mostly use API products for my aquariums. Thanks ## 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.at/products/71225598-api-fresh-water-master-test-kit-1-piece](https://www.desertcart.at/products/71225598-api-fresh-water-master-test-kit-1-piece) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-23*