The OCTO Series Classic-S Protein Skimmer is a compact, high-performance in-sump skimmer designed specifically for aquariums with limited sump space. Engineered for efficiency and reliability, this space-saving protein skimmer delivers powerful organic waste removal while maintaining a minimal footprint inside your sump. Powered by our precision-engineered AQ skimmer pump, the Classic-S draws water directly from the sump — eliminating the need for an additional feed pump. Housed in a durable, hand-crafted acrylic body, this skimmer is built for long-term performance and effortless maintenance. Whether you're running a reef aquarium or a marine fish-only system, the OCTO Classic-S provides exceptional filtration performance, quiet operation, and a sleek, modern design that fits seamlessly into compact setups. Key Features & Benefits Ultra-Compact Footprint – Ideal for small sump compartments Superior Skimming Performance – Efficient removal of organic waste AQ Pump Technology – Specifically designed for optimal protein skimming Bubble-Free Output Design – Clean, smooth outflow Quiet Operation – Low-noise performance for home and office aquariums Hand-Made High-Quality Acrylic Construction – Durable and long-lasting Sleek Wine Bottle Shaped Smooth Cone Body – Enhances foam fractionation efficiency Integrated Waste Drainage – Easy collection cup maintenance Tool-Free Disassembly – Simple cleaning and servicing Available Models & Specifications Classic-S (9W) - 110S Pump Power: 9 watts Footprint: 200mm x 155mm Height: 485mm Recommended Tank Volume: Up to 500L (132 US Gallons) Ideal for medium-sized reef and marine aquariums requiring efficient skimming in tight sump spaces. Classic-S (11W) - 150S Pump Power: 11 watts Footprint: 265mm x 205mm Height: 525mm Recommended Tank Volume: Up to 600L (158 US Gallons) A balanced option offering strong performance with a moderate footprint. Classic-S (18W) - 152S Pump Power: 18 watts Footprint: 240mm x 185mm Height: 530mm Recommended Tank Volume: Up to 800L (211 US Gallons) Perfect for larger reef systems needing powerful and consistent protein removal. Classic-S (35W) - 202S Pump Power: 35 watts Footprint: 315mm x 255mm Height: 590mm Recommended Tank Volume: Up to 1000L (264 US Gallons) Designed for large reef aquariums where maximum filtration performance is essential. Why Choose the OCTO Classic-S Protein Skimmer? If you need a compact in-sump protein skimmer that combines performance, quiet operation, and premium build quality, the OCTO Classic-S series is engineered to deliver. Its small footprint makes it ideal for tight sump layouts, while its powerful AQ pump ensures consistent and effective organic waste removal — keeping your aquarium water crystal clear and your marine life thriving. Upgrade your reef filtration system today with the OCTO Series Classic-S Space Saving Protein Skimmer.
