Easy to use

The test was great and easy to use. Will buy more in the future.

Good test

Came quick and works as described

I just wish there was a better way to differentiate between 10 20, but it's API brand.

I saw a YouTube video that said you could add a drop of solution 1 to a rock to determine if it's safe for your in the tank. My stolen lake rocks failed. My yard rocks passed. Who knows if it's true tho right. Satisfied though.

Everything looks good

Great value for the number of tests you get.The second bottle must be shaken for at least 30 seconds to obtain accurate test results.

And I thank you too!

Will buy again

I love it! It is very accurate...I lost three fish because my dipsticks were not working.This is very easy to use and very accurate. If you want to avoid any nitrite stress you need to get this one

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.

Works in 5 mins. Easy to use and gives accurate readings.

API liquid test kits are among the best and most accurate. You can't go wrong with these. They are more accurate than the various test strips for sale, Check out various aquarium forums and you will see a lot of recommendations for API test kits.

Nice item as described

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

Green aqua = 0 ppmBlue warns and purples shout.

Being new to fish tank keeping after all these years I had to order all of my supplies. This test is easy to use and many many tests in the box. The ONLY downfall to these is honestly the company should re think the shape of these tubes. I can't tell you how many times they have tipped over lol too tall and slender makes them tip easy

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

Kit is straightfoward to use. There's a business-card size set of icons on the flip side of the color scale that guide you through usage, and it's 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 you're oversaturating, you will see the reagent turn deep purple immediately, then slowly turn pale greenish-blue over time. If you're suspicious that the reading is oversaturated (this only applies if you're 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 you're 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.