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

What more is there to say? It tests aquariums for nitrite. Actually you do the testing and take a small water sample, add drops of reagent and match colors. If you find nitrite you need water changes. Pretty simple stuff.

This item is great for testing aquarium water parameters. it functions great and will last a long time. a tip i have learned is to only use 2.5 ML of water compared to to recommended 5, it has doubled the life of the testing kit with the exact same results as using more product. highly recommend

Green aqua = 0 ppm Blue warns and purples shout.

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.

Well it works. What else can I say?

I always wanted to know how much nitrite is in my aquarium - so this takes the guesswork out. I was happy to see that I have around 0 ppm nitrite. Look up the nitrogen cycle for aquariums if you want to find out more about why this is important to know. I like saving money ordering these products through amazon, the pet stores are too pricey.

use it for my AP system

And I thank you too!

good accurate and very usefull

The box was crushed :/ so I was concerned that the glass test tube was broken, but thankfully it was fine!