Accurately measure both General Hardness (GH) and Carbonate Hardness (KH) in your freshwater aquarium with the reliable API GH/KH Test Kit.
General Hardness (GH): Measures the total concentration of calcium and magnesium ions in your water, which are essential for healthy fish development and plant growth.  
Carbonate Hardness (KH): Measures the amount of carbonate and bicarbonate ions in your water, which play a crucial role in buffering pH fluctuations and maintaining a stable environment for your aquatic life.  
 
This easy-to-use kit allows you to quickly and accurately determine both GH and KH levels, enabling you to maintain optimal water conditions for your fish and plants. If you'd like to watch a video on how to use the kit, check out our Water Chemistry video.
 
Key Features:
Simple and Accurate: The liquid titration method provides precise readings for both GH and KH.  
Easy to Use: Clear instructions and color charts make testing a breeze.
Essential for Aquarium Health: Monitor GH and KH levels to maintain a stable and healthy environment for your fish and plants.  
Quick Results: Get accurate readings in minutes.
 
How it Works:
Collect water sample: Draw a sample of aquarium water.
Add reagents: Add the included reagents to the water sample for each parameter (GH and KH).
Compare colors: Compare the color of the water sample to the provided color chart.
Determine GH/KH levels: Read the GH and KH levels directly from the charts.
 
Maintain optimal water conditions and ensure the well-being of your aquatic inhabitants with the API GH/KH Test Kit.