NYOS is a German manufacturer of premium reef-keeping protein skimmers, water pumps, test kits and additives. The company’s drive to innovate while maintaining simplicity led to the development of their Quantum protein skimmer line. The NYOS Viper series of water pumps are energy efficient and purpose-built for saltwater use. The REEFER test kits are simple to use yet accurately reveal water quality with high precision. NYOS reef additives and filtration media make it easy to care for corals and other reef life in any size aquarium. NYOS is recognized the world over for producing top of the line reef products at a reasonable price.