API GH & KH Test Kit

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The API GH & KH TEST KIT helps you duplicate the natural habitat of your fish to prevent stress, keeping them healthy! When keeping freshwater fish and plants, the general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habitat.Includes 2 test bottles, easy-to-ready instructions, and glass test tubes.For Fresh Water and Planted Aquariums. Show more