Reef Octo Classic-S Skimmer

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.

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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

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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.