Raising the alkalinity in an aquatic environment is a common objective for aquarists. It refers to the process of making the water less acidic and more basic. This is usually achieved through the addition of substances that contain alkaline compounds, such as buffering agents designed for aquarium use. For example, adding crushed coral or aragonite substrate to the tank can slowly elevate the measure over time.
Maintaining an appropriate measure is vital for the health and well-being of many aquatic species. Certain fish and invertebrates thrive in alkaline conditions, and failing to provide a suitable environment can lead to stress, disease, and even death. Historically, aquarists have employed various methods, from using natural materials like seashells to employing chemical solutions, to replicate the specific water conditions found in the natural habitats of the creatures they keep.