The RK2 Systems RK50PE Protein Fractionator Skimmer is a high-performance filtration device designed for advanced saltwater reef aquariums. Utilizing a sophisticated fractionation process, it effectively removes dissolved organic compounds and particulate waste from the water column. By injecting air, and optionally ozone, into a counter-current flow, this skimmer generates a highly concentrated foam that captures and exports harmful pollutants, significantly improving water clarity and quality for a healthier marine environment. This industrial-grade protein skimmer boasts robust construction with molded HDPE reaction chambers and a counter-current design optimized for efficient foam formation. Key features include a wash down system to prevent foam drying, an optional automated venturi cleaning system, and ozone gas connection ports for enhanced purification. It comes equipped with tuned Mazzei Venturi pumps and Kynar Mazzei Venturi injectors, high-quality MDM pumps made in the U.S.A., Spears piping and fittings, clear sight gauges, and Hayward or Asahi ball valves for reliable operation and easy maintenance. The RK2 Systems RK50PE Protein Fractionator Skimmer is ideally suited for serious hobbyists, large-scale public aquariums, or commercial aquaculture operations demanding superior water purification and reliability. Its robust build quality, advanced design principles, and use of premium, durable components ensure long-term performance and minimal maintenance, making it an excellent investment for maintaining pristine water conditions in demanding marine systems.