API GH & KH Test Kit, 2.5 oz

The API GH & KH Test Kit, 2.5 oz., is designed to measure general hardness (GH) and carbonate hardness (KH) in freshwater aquariums, helping aquarists maintain stable pH levels and a healthy environment for fish and plants.

At-a-glance: Measures GH and KH · Helps prevent rapid pH shifts · Suitable for freshwater aquariums

Key Features

• Accurately measures general hardness (GH) and carbonate hardness (KH)
• Helps prevent rapid pH shifts by monitoring KH levels
• Includes two test bottles, easy-to-read instructions, and glass test tubes
• Suitable for freshwater and planted aquariums

Specifications

• Test kit volume: 2.5 oz.
• Includes: 2 dropper bottles, instructions, color chart, and non-staining glass test tube with snap-tight cap

How to Use

1. Rinse a clean test tube with the aquarium water to be tested.
2. Fill the test tube with 5 ml of aquarium water (to the line on the test tube).
3. Add the appropriate test solution (GH or KH), one drop at a time, shaking the test tube after each drop.
4. Count the number of drops added until the solution changes color.
5. The number of drops indicates the GH or KH value in degrees (°dGH or °dKH).