The process of decreasing the concentration of dissolved minerals, specifically calcium and magnesium, in aquarium water is a crucial aspect of maintaining optimal aquatic conditions. Elevated mineral levels can lead to various problems for sensitive fish species and aquatic plants. A common example involves using reverse osmosis (RO) or deionized (DI) water to dilute harder tap water, effectively lowering the mineral content.
Managing mineral concentration is essential for replicating the natural habitats of many aquarium inhabitants. Soft water environments, characterized by low mineral concentrations, are vital for the health and reproduction of certain species. The practice of adjusting water parameters dates back to the early days of aquariums when hobbyists began to understand the specific needs of different aquatic organisms, paving the way for refined techniques and technologies.