Works great, what else can you ask for?

Much better than the API test strips! This test kit was absolutely worth the money.

Very easy to test and adjust aquarium water ph

It woks great easy to use

Works great and easy to read. A must have for starting or maintaining an aquarium. Keep in mind d this is only for ammonia.

Always accurate within a few tenths of a pH integer.

Works great for what it's purposes is.

testing the water with shrimp in the tank

Works well.

This product was extremely helpful for me to see how hard my tap water was for my Axolotl aquarium. Super easy to use, pretty quick results, definitely recommend.

needed to get one for my axolotl tank as i have to use R/O water in the tank due to my city water having too many nitrates. was able to test the water and add the appropriate chemicals

What can I say? Dependable accurate test from the well respected API aquarium products people. Easy to use, fast and accurate results.

I started a new tank after taking a break from fish. This test kit is perfect for checking ammonia levels as the tank cycles. Easy to use too.

I recently started using the API GH amp; KH Test Kit for my freshwater aquarium, and I must say it has been an incredibly helpful tool for maintaining a healthy tank environment. Here’s a detailed review based on my experience: Ease of Use: The test kit is very straightforward and user-friendly. The included instructions are clear and easy to follow, even for beginners. Testing both General Hardness (GH) and Carbonate Hardness (KH) takes just a few minutes, and the color changes in the water make it easy to get accurate results. Accuracy: The API test kit provides reliable and consistent readings. I compared the results with a digital meter, and they matched up perfectly. Knowing the GH and KH levels helps me adjust my water chemistry for optimal conditions, especially for sensitive fish like cichlids and shrimp. Functionality: Having a tool that measures both GH and KH in one kit is incredibly convenient. GH helps monitor essential minerals for fish health, while KH is crucial for stabilizing pH levels. This kit makes it easy to detect changes early, helping prevent pH swings or stress in my fish. Value for Money: For the price, you get a high-quality, reliable kit that will last quite a while. The included bottles have enough solution for numerous tests, making it a cost-effective option for regular water monitoring. Overall Impressions: The API GH amp; KH Test Kit is a must-have for any freshwater aquarium enthusiast. It’s easy to use, highly accurate, and helps ensure your water parameters are within the right range for your fish and plants to thrive. I highly recommend it for hobbyists of all experience levels. Rating: 5/5 Reliable, accurate, and easy-to-use water testing for a healthy aquarium!

The test vials were extremely cheap compared to the glass ones in the Master Test Kit. Also, good luck only doing one drop at a time. Beware, the drops come out very quickly.

This came in very quick as I needed it asap.

Missing color chart

Sent me two bottle number ones for the ammonia testing. Really inconvenient because I literally got my betta in today so idk what my ammonia is like in there

I agree with other reviewers that a color chart would be helpful. With the KH test , my water sample turns very light blue (1st drop)to light yellow-blue (2nd drop)to slight yellow but almost colorless (3rd drop)to vivid yellow (4th drop). Do I start counting at the soonest hint of yellow? I don’t have to worry much in my case, but the subtleness might be a problem for those needing specific measurements. Also be sure to check expiration date. My GH solution expires in 2027. The KH solution expires 2029. I’ll use it up by then, but just something to check. No issues.

1 drop weird orange color. 2 drop weird green. All water tests the same. Tank water. Ro water, Tap water. All test the same. Useless