The Reef Octopus Octo Classic 200 INT Protein Skimmer is a high-performance in-sump filtration device designed for saltwater reef aquariums up to 250 gallons. It efficiently removes organic waste and dissolved impurities from the water column, significantly improving water clarity and overall tank health by preventing nutrient buildup. This classic series skimmer is built for reliable and consistent operation. Constructed from durable, high-quality cast acrylic, this skimmer features a refined hybrid cone body and a bubble diffusing chamber that work together to stabilize foam production and maximize contact time for organics. It is powered by an air-shredding Aquatrance 3000s pinwheel pump for quiet and efficient performance, complemented by an oversized air silencer. User-friendly features include an easy-to-adjust gate valve for precision water level control and a quick-release neck for effortless collection cup removal, which also includes a convenient drain. Ideal for well-stocked aquariums up to 250 gallons, or systems with a medium bioload up to 200 gallons, and heavy bioloads up to 150 gallons, the Classic 200 INT ensures optimal water quality. Its robust design and effective waste removal capabilities make it an excellent choice for hobbyists seeking a dependable and quiet protein skimmer to maintain a pristine reef environment.