API GH & KH Test Kit – Freshwater Aquarium Water Hardness

The API GH & KH Test Kit is designed for accurate testing of general hardness (GH) and carbonate hardness (KH) in freshwater aquariums. Maintaining proper hardness levels is essential for healthy fish, plants, and overall tank stability.

✅ Precise Results – Easily measure GH (calcium & magnesium levels) and KH (buffering capacity) to ensure a stable environment.
✅ Supports Fish Health – Proper hardness reduces stress and helps fish thrive, particularly species that prefer specific water parameters.
✅ Promotes Plant Growth – Essential for aquascapers; balanced GH & KH levels support lush, vibrant aquatic plants.
✅ Prevents pH Swings – KH acts as a natural buffer, preventing sudden and harmful pH fluctuations.
✅ Simple to Use – Easy step-by-step instructions with clear color-change indicators.

Best For: Freshwater aquariums, community fish tanks, live plant setups, cichlid tanks, and aquarists who want full control over their water chemistry.

Kit Includes:

• GH reagent solution
• KH reagent solution
• 2 glass test tubes with caps
• Step-by-step instruction booklet