API Freshwater GH & KH Test Kit


  • $ 12.99
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When keeping freshwater fish and plants, the general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habitat. The API® GH & KH Test Kit helps you duplicate the natural habitat of your fish to prevent stress, keeping them healthy! The kit includes 2 bottles of liquid reagent, 2 glass test tubes with snap-tight caps, and step-by-step instructions. 

We recommend that you take a few minutes each week to monitor your aquarium conditions and create a better underwater world for your fish. Testing your aquarium water has never been so easy or accurate!

Freshwater Only

Includes 2 test bottles, easy-to-ready instructions, and glass test tubes

API Test Kit BFA Item #
GH & KH Test Kit AP01058


Made in the USA