• API GH / KH Test Kit
  • API GH / KH Test Kit

API GH / KH Test Kit

Sold Out



Quick, easy and accurately test your aquarium's hardness at home!

From the manufacturer:

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!

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


Full instructions included in each test kit. Number of tests determined by hardness of water being tested. Use in conjunction with pH test kits!

Search our store