API Carbonate Hardness (KH) Test Kit

API® KH carbonate hardness test kit tests freshwater or sea aquarium for carbonate hardness (KH) and helps monitor water quality and prevent invisible problems with water that can be harmful to fish and plants. The carbonate hardness stabilizes the pH of the aquarium and can be used to determine the appropriate dose of pH buffers.

We recommend dedicating a few minutes each week to monitor the conditions in the aquarium and create a better underwater world for your fish. Water testing in the aquarium has never been so easy and accurate!