Keeping and maintaining a saltwater aquarium can be a rewarding but challenging hobby. It requires careful attention to water quality, temperature, and salinity, as marine organisms are highly sensitive to changes in their environment. Regular water testing for pH, ammonia, nitrate, and salinity levels is essential to ensure a healthy ecosystem. Filtration systems, protein skimmers, and live rock help maintain water cleanliness, while proper lighting is crucial for coral growth. Additionally, routine water changes, typically 10-20% every couple of weeks, help remove waste and replenish essential minerals. Keeping a balanced population of fish, invertebrates, and corals is key, as overcrowding or introducing incompatible species can lead to stress and disease. With dedication and consistent maintenance, a saltwater aquarium can thrive and become a beautiful display of marine life.