API GH & KH Test Kit
API GH & KH Test Kit. For the wellbeing of your freshwater fish and plants, it’s crucial to ensure that the general hardness (GH) and carbonate hardness (KH) of your aquarium water align with their natural environment. This is a valuable tool that assists you in replicating your fish’s natural habitat, thereby reducing stress and promoting their health.
api-gh-&-kh-test-kit-instruction-manual