Carbonate Hardness

Definition: Carbonate hardness (KH) is a measure of the concentration of carbonate and bicarbonate ions in water. It is linked to water buffering capacity.

Function in the Aquarium: KH is a crucial parameter in aquarium water that influences the stability of pH. Carbonate and bicarbonate ions act as buffers, helping to resist changes in pH caused by acids or bases. Monitoring carbonate hardness is important, especially in aquariums with sensitive species that require stable pH conditions.