API Freshwater GH & KH Hardness Test Kit
$12.99
This test kit includes everything you need to measure the general and carbonate hardness of your aquarium water. The added benefits are that it monitors GH & KH to create a more natural habitat and is used in fresh water. Follow the API Easy Care Guide and use GH/KH TEST KIT when testing key water parameters & identifying problems in an aquarium. 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 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. A tip from API: KH can strongly influence pH. If you add a pH adjuster to your aquarium and the pH returns to its original level in a day or two, this is called “pH rebound” –and it is caused by high KH.
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