--- product_id: 1627314 title: "API TEST KITS" price: "ƒ126" currency: AWG in_stock: true reviews_count: 13 url: https://aruba.desertcart.com/products/1627314-api-test-kits store_origin: AW region: Aruba --- # 7 color-coded solutions 5 vital water parameters 800 tests capacity API TEST KITS **Price:** ƒ126 **Availability:** ✅ In Stock ## Summary > 🐠 Keep your freshwater world flawless — test like a pro, thrive like a boss! ## Quick Answers - **What is this?** API TEST KITS - **How much does it cost?** ƒ126 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [aruba.desertcart.com](https://aruba.desertcart.com/products/1627314-api-test-kits) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Value:** 800 tests per kit means consistent monitoring without frequent repurchases. - • **Proactive Fish Care:** Detect invisible water issues early to prevent stress, disease, and fish loss. - • **User-Friendly Design:** Includes 4 test tubes with caps and a durable portable case for easy, mess-free testing on the go. - • **Precision at Your Fingertips:** Scientifically calibrated color card ensures accurate readings every time. - • **Comprehensive Water Health Check:** Monitors pH, high range pH, ammonia, nitrite, and nitrate for a thriving freshwater aquarium. ## Overview The API Freshwater Master Test Kit offers 800 precise tests to monitor five critical water parameters in freshwater aquariums. Featuring seven color-coded solutions, four capped test tubes, and a laminated color card, it empowers aquarium enthusiasts to detect invisible water quality issues early, ensuring optimal fish health and longevity. Trusted by over 31,000 users with a 4.8-star rating, this kit combines scientific accuracy with user-friendly design for professional-grade aquarium care. ## 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. Review: I will buy it again - Easy to understand the instructions. Comes in a portable case which is a perfect caddy to go from one aquarium to the next. No scent that I detected. The case is durable and has an easy storage system that holds each vile. The colors are easy to get a reading to match against and each bottle has a different color for color coded instructions. The helped me adjust my water parameters to better suit my tropical fish. Very effective. Review: Good - This kit will last you a while, the material is good and it is very simple and easy to use. It doesn’t smell bad at all. The tubing is plastic, and I recommend handling with gentle care because you can rip off the lids if you mis treat it, but other than that the whole kit is good. The color comes out pretty precise, and the instruction manual tells you everything you need to do especially for people’s first time using it. Personally in the back of the book there are blank pages, and I like writing the date and the results every time I water test. Just a little tip! ## 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 | |---------------|-------| | Customer Reviews | 4.8 out of 5 stars 31,426 Reviews | ## Images ![API TEST KITS - 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I will buy it again *by J***A on July 4, 2026* Easy to understand the instructions. Comes in a portable case which is a perfect caddy to go from one aquarium to the next. No scent that I detected. The case is durable and has an easy storage system that holds each vile. The colors are easy to get a reading to match against and each bottle has a different color for color coded instructions. The helped me adjust my water parameters to better suit my tropical fish. Very effective. ### ⭐⭐⭐⭐⭐ Good *by H***E on August 8, 2026* This kit will last you a while, the material is good and it is very simple and easy to use. It doesn’t smell bad at all. The tubing is plastic, and I recommend handling with gentle care because you can rip off the lids if you mis treat it, but other than that the whole kit is good. The color comes out pretty precise, and the instruction manual tells you everything you need to do especially for people’s first time using it. Personally in the back of the book there are blank pages, and I like writing the date and the results every time I water test. Just a little tip! ### ⭐⭐⭐⭐⭐ Must have kit for monitoring fish tank *by M***4 on September 1, 2013* Got this kit for monitoring my goldfish tank. Very easy to use with clear instructions. Overall very satisfied and think this is a very suitable test kit to start with. This kit tests for 2 things. (1) PH levels and (2) Ammonia, Nitrite, and Nitrate levels (i.e. the Nitrogen Cycle). The Nitrogen cycle as related to a fish tank is as follows... Your fish gives off waste products, which Ammonia is a major component. When Ammonia levels in the tank go to high the fish can get burns, sick and can die. At some point your tank should develop bacteria that convert the Ammonia to Nitrite (this bacteria can live in the gravel and the filter. Also this bacteria is killed by tap water that has chlorine present so this is why you don't wash gravel with tap water. Also this is why you should not change all filter elements at once as you may be eliminating too much of your bacteria colonies). Once the bacteria that do this develop a large enough colony your ammonia levels should go to zero. Before the colony of bacteria is developed your tests for Ammonia should show some level present. You want to make sure that the level does not go to high. To reduce Ammonia levels you can either do water changes, use a filter that removes Ammonia or there are additives that can be added to reduce the levels as well. The next step is the bacteria converts the Ammonia to Nitrite. Nitrite levels if they go too high are bad for fish. Initially Nitrite levels will tend high (similar solution for excessive Ammonia levels will work for Nitrite as well). Eventually a colony of bacteria will develop that convert Nitrite to Nitrate. Once the colony reaches maturity your Nitrite levels should come up as zero on your tests. The final step (well not final if you use plants, which is more complicated) is as mentioned above the Nitrite being converted to Nitrate. When the bacteria colonies are fully removing all the Ammonia and Nitrite the tank is called cycled. At this point the major concern is that Nitrate levels should not go too high. The fortunate thing is that fish can tolerate relatively high levels of Nitrate as compared to Ammonia or Nitrite. I would think most cases where fish are not faring well, probably the Ammonia or Nitrite levels are high and the Nitrate is fine. In any case you will need to test for Nitrate probably no more frequently than every few weeks to few months (depends on your tanks size and number of fish) to make sure the levels are not getting to high. The solution for high levels is the same as for Ammonia or Nitrite, namely water changes, filtering, and additives (I have stayed away from additives but they are an option). This kit gives you everything you need to test for this critical cycle and is probably all you need for most fish tanks to help you keep your fish healthy for a long time. ## 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://aruba.desertcart.com/products/1627314-api-test-kits](https://aruba.desertcart.com/products/1627314-api-test-kits) --- *Product available on Desertcart Aruba* *Store origin: AW* *Last updated: 2026-09-20*