Check the listing for details. API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. 4.8 oz.. Condition: New. Listed at 17.67 USD. API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. Description Keep your fish healthy and thriving by testing your aquarium water's GH levels regularly with this easy-to-use API GH & KH TEST KIT for freshwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Water hardness is a measure of the dissolved mineral content of water. There are two types: the general hardness (GH) and carbonate hardness (KH). When keeping freshwater fish and plants, the GH and the KH of aquarium water should match their natural habitat. The API GH & KH TEST KIT helps aquarists duplicate the natural habitat of their fish, as well as detect low KH levels, which can lead to rapid and wide pH shifts, stressing fish. API GH & KH TEST KIT contains KH test bottle, GH test bottle, instructions and two capped test tubes. With API aquarium products, its easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because were dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. Features: Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution and 2 test tubes with capHelps monitor water quality and prevent invisible water problems that can be harmful to fish and plants and cause fish lossAccurately measures GH & KH in freshwater aquariumsWater hardness is a measure of the dissolved mineral content of water and should match fish natural habitat to prevent fish stress and keep them healthyUse for weekly monitoring and when water or fish problems appear Product Details: Is Discontinued By Manufacturer : NoProduct Dimensions : 2.75 x 1.63 x 5.13 inches; 2.5 ouncesItem model number : 58Department : Unisex-AdultDate First Available : June 20, 2004Manufacturer : Mars FishcareCountry of Origin : USABest Sellers Rank: #3,744 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Aquarium Test Kits#2 in Aquarium Test KitsItem Weight: 2.5 ouncesDepartment: Unisex-AdultManufacturer: Mars FishcareCountry of Origin: USAItem model number: 58Date First Available: June 20, 2004Item Package Dimensions L x W x H: 5 x 3 x 1.5 inchesItem Dimensions LxWxH: 2.75 x 1.63 x 5.13 inchesItem Weight: 2.5 OuncesBrand Name: APITarget Audience Keyword: FishDirections: It is necessary to test the GH and KH to monitor water quality and prevent stressful conditions.Model Name: GENERAL/CARBONATE HARDNESS KITColor: DAASize: 4.8 oz.Material: PlasticNumber of Items: 1Style: GH & KH Shipping Free fast shipping Return Policy All items qualify for returns within 30 days of receipt.