API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit

I’ve been using the API Nitrate Liquid Test Kit for a while now and it’s been rock solid. The instructions are clear, the bottles are easy to work with, and the color chart is straightforward to read under normal lighting. I appreciate that it’s a true liquid test and not strips, so the results feel much more reliable and consistent. The test has helped me stay on top of nitrate levels in my tanks and catch trends before they become problems. The reagents last a long time, and as long as you follow the directions and shake bottle #2 thoroughly like it says, the readings are repeatable. Overall, it’s accurate, dependable, and worth having if you care about water quality. I wouldn’t hesitate to buy it again.

This Aquarium Water Test Kit is reliable, easy to use, and very helpful for keeping aquarium water safe. It provides accurate nitrate readings for both freshwater and saltwater tanks, making it great for monitoring water quality and preventing algae problems. The kit includes clear instructions and enough tests to last a long time.

This product works very accurately. Nice to be able to buy this separately and not purchase the whole kit. More expensive then the strips but I trust this process.

This test works perfectly fine. If people say it doesn't work then they're doing it wrong, just be sure to follow the instructions. It's pretty quick to use and last for quite some time so it's totally worth it, plus the test strips are not very accurate.

Excellent product, good value for the money.

This Nitrate test is very good. Honestly, I used both the Salifert and API versions and they both work good. What is nice about the API version is that you can use the acid to test if rocks have carbonate in them by dropping a couple of drops on a rock to see if it bubbles. (look it up). Also, about the colors. It gets hard to distinguish the colors. The way that I do it, is I ask myself "does it have orange in it? If so, then it is one of the Orange. Then I ask myself if there is no orange then it is red! Or if their is no orange then it is Yellow. Seriously! Try it!. Do the test. Ask yourself if it has orange, or STILL has orange. it will then be easier to match to the card! I hope I explained that well. Good Luck

This test kit I got to refill my master test kit. The Nitrate test runs out first because of the number of drops required for each test.

API kits are fairly accurate for the price, I highly recommend them for salt water aquarium owners that need and should have at least 2 kits of every important test type so they can cross reference results if they feel something is wrong with a particular test result. API fills that niche perfectly with pretty accurate easy to use kits that cost a quarter the price of the more accurate ones like Salifert, ELOS and Red Sea Pro. The API Nitrate Kit is as simple as it gets, just fill the vial to the marker or better yet use a syringe and add 5ml as directed. Then add 10 drops of reagent "A". swirl for a bit then shake reagent "B" for 30 seconds very vigorously and add 10 drops of that. Shake the whole thing for one minute vigorously and then wait 5 minutes to get a result. IMPORTANT NOTE: If you forget to shake reagent "B" you might as well throw the whole bottle of reagent out. This solution separates out in the container after a few hours into layers of different chemicals. If you don't shake it, you will be dripping out 10 drops of just one of those chemicals and remaining mixture will be compromised. The end result is that the next time you use it and shake it up properly the typically result is a lower reading than normal. Just remember to always shake reagent B properly for 30 seconds and you wont have any problems. If your Nitrates go down to reading Zero on the API kit, then it's time to move to a more accurate kit that is designed to read very low Nitrate levels. If your keeping a SPS Reef Tank you need the Nitrates to be near Zero and the API kit will not be accurate enough to read the small amounts that may be in your aquarium. For FOWLR Tanks, Nitrate is not as not as big of an issue, so an API kit or two is all you will probably need.

A very useful test kit for keeping track of water quality in both freshwater and saltwater aquariums. The results are clear and easy to read using the colour chart, which makes monitoring nitrate levels straightforward even for beginners. The kit feels well made, and the glass test tube is sturdy and easy to clean after use. The instructions are simple to follow, and the testing process only takes a few minutes, making it convenient for regular weekly checks. It’s particularly helpful for spotting potential water quality issues before they affect fish or plants. Regular testing helps keep nitrate levels under control and supports a healthier aquarium environment. Overall, a dependable and practical kit that does exactly what it should. A good addition to any aquarium maintenance routine.

Producto indispensable para monitoreo de la salud de las bacterias que eliminan el amoniaco del agua salada de mis medusas.

works.

Produit très simple d'utilisation, fiable et pas cher, le top!

Great product, easy to use with instructions and accurate.