Alkalinity

Definition: Alkalinity is a measure of the water's ability to resist changes in pH.

Function in the Aquarium: Alkalinity is influenced by the concentration of carbonate and bicarbonate ions in the water. These ions act as a buffer, helping to stabilize and maintain a consistent pH level. Adequate alkalinity is essential for preventing rapid pH swings, which can be stressful or harmful to aquarium inhabitants. Regular testing and adjustments, if necessary, are part of maintaining water quality in the aquarium.