API KH Carbonate Hardness Test Kit
Tests tap water and fresh or saltwater aquariums for carbonate hardness (KH), which is the measure of dissolved carbonate and bicarbonate ion concentrations. Helps prevent stress on fish caused by rapid pH shifts, the result of low levels of KH. Helps aquarists duplicate the natural habitat of aquarium fish, thereby providing a healthful aquarium environment. Can be used to determine the proper dose of pH buffers.
How to Use
- Draw 10 mL of water sample into the test tube.
- Add the appropriate reagent from the kit as instructed.
- Wait for the color change to occur and compare with the color chart provided.
- Interpret the result based on the chart to determine KH level.
Specifications
| Component | Details |
|---|---|
| Test Type | Carbonate Hardness (KH) |
| Water Types | Tap water, fresh water aquariums, saltwater aquariums |
| Result Accuracy | ±1 dKH |
| Kit Includes | Test reagents, color chart, instructions |
FAQ
Can this test kit be used for both freshwater and saltwater aquariums?
Yes, the API KH Carbonate Hardness Test Kit is suitable for both freshwater and saltwater aquariums.
How accurate is the KH measurement provided by this kit?
The kit provides accurate KH measurements with an accuracy of ±1 dKH.
Is the test kit reusable?
Please contact customer service

Dan Langdon –
This kit is easy to use and gave me reliable KH readings for my freshwater tank. I noticed fewer pH fluctuations since using it regularly. The color chart is clear and the instructions are straightforward.
Joanne Tucker –
I used it to check my saltwater tank’s KH levels. The results matched what I expected, and it helped me adjust my buffer dosage properly. A small improvement in fish health over time.
Nathan Arnold –
Great value for the price. The test is quick and the results are consistent. I now monitor KH weekly and it has made a noticeable difference in my aquarium’s stability.