The Reef Octopus Regal 200 SSS Protein Skimmer is an advanced in-sump filtration device engineered to meticulously remove organic waste and dissolved proteins from saltwater reef aquariums. Utilizing a powerful controllable pinwheel pump, this skimmer efficiently produces a concentrated foam head, extracting detrimental pollutants before they can break down and degrade water quality, ensuring a healthier and more stable environment for delicate corals and marine life. Boasting solid cast acrylic construction, the Regal 200 SSS features a compact footprint of 11.6″ x 9.7″ and a height of 23.6″, housing an 8″ reaction chamber. It is powered by a safe and efficient 24V Reef Octopus VarioS-4S controllable pump, offering five energy-saving power settings. The detachable controller includes multiple pause times for feeding, a safety float switch, integrated memory, and a 0-10v input for seamless integration with third-party controllers, handling bioloads from 200 gallons (heavy) to 400 gallons (light). This protein skimmer is ideal for dedicated reef aquarists seeking premium water purification and precise control for tanks up to 400 gallons. Its small footprint is perfect for sumps with limited space, while its robust construction and advanced features, like the intelligent VarioS pump and comprehensive controller, provide unparalleled reliability and customization. The Regal 200 SSS ensures superior water clarity and nutrient export, making it an essential component for maintaining a thriving and pristine reef ecosystem.