API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit

Very easy to use, has easy to read directions and gives accurate readings

I am using other of the API test products, and they tend to be a lot easier to use and simplified. This is a single bottle test, and takes five minutes to complete once mixed. I am doing freshwater and it seems very accurate, it is easy enough to compare to the color chart and figure out the reading.

gives you a good idea if there is a issue with your tank

Very accurate, I think pricey but still about 30% cheaper than the local pet store

Add the drops to the vial of aquarium water and wait 5 minutes, compare the color to the color chart on the provided card - not hard. API has been around a long time, so I will assume accuracy of the test results.

Kit is straightfoward to use. Theres a business-card size set of icons on the flip side of the color scale that guide you through usage, and its easy enough that you can figure it out solely from the pictures (there is also a verbose manual in the kit). I find the liquid readout easier to decipher than dip-strips. For most cases in an established aquarium, this test kit will provide the information that you need. Oftentimes you either have zero nitrite, or too much nitrite, and in the case of the latter, this kit is able to tell you whether you have more or less now than when you last tested. A word of caution for anyone doing fishless cycling of a tank: if you oversaturate this test reagent, it will read 0 ppm nitrite at the 5 minute time point. It takes around 100 or greater ppm nitrite to achieve this, and if youre oversaturating, you will see the reagent turn deep purple immediately, then slowly turn pale greenish-blue over time. If youre suspicious that the reading is oversaturated (this only applies if youre cycling a tank without fish, where you might incur substantial nitrite buildup but there are no fish to alert you by dying): just dilute the tank water 10 or 20-fold and test again to confirm your first result. Extending from this: if youre having a hard time measuring high amounts of nitrite because the shades of purple are too similar, just dilute your tank water a known amount, then read and multiply the result by the amount that you know you diluted.

This is a good teesing kit, Im sad my brother broke the glass tube but other than that Im quite pleased

This product is a must have for testing the water parameters in your tank. I will be ordering again when I run out.

Product I know is great but this is seriously how I get it in my package?!

excellent