API KH Test Kit

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The API KH TEST KIT tests fresh or saltwater aquariums for carbonate hardness (KH), and helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants. Carbonate hardness stabilizes aquarium pH, and can be used to determine the proper dose of pH buffers.Includes 1 test bottle, easy-to-ready instructions, glass test tube and color chart.For Fresh & Salt Water Aquariums. Show more