Octo Classic 110EXT Recirculating Protein Skimmer

Reef Octopus Classic 110EXT Recirculating Protein Skimmer

The Reef Octopus Classic 110EXT (SKU: CLSC-110EXT) is a high-performance external recirculating protein skimmer designed to bring advanced filtration control to marine aquariums up to 130 gallons. Unlike standard internal skimmers that rely on a single water stream for both processing and moving water, the Classic 110EXT utilizes a sophisticated recirculating configuration. The onboard Aquatrance 1000s pinwheel pump acts solely to shred air and water together within the 5-inch chamber. A separate feed pump or direct overflow line (sold separately) determines the water flow-through rate, giving the hobbyist total control over nutrient dwell time.

Handcrafted from durable, premium cast acrylic, the Classic 110EXT features a modified hybrid cone body that stabilizes the rising micro-bubble mixture while eliminating heavy turbulence. This smooth transition ensures organic wastes collect effectively in the quick-release collection cup before they can degrade into nitrates or phosphates. Equipped with an oversized air silencer for quiet cabinet operation and metric-to-standard plumbing adapters, this versatile external unit delivers commercial-level filtration efficiency for standard-sized standalone reef and fish-only marine environments.

Key Features

• Independent Recirculation Logic: Maximizes air-to-water exposure time by decoupling chamber mixing from tank turn-over volume.

• Aquatrance 1000s Pinwheel Pump: Delivers a robust 420 L/H of air draw while operating at a highly efficient 9 Watts.

• Integrated Bubble Diffuser: Calms water entering the reaction zone to preserve structural foam stability.

• Precision Gate Valve Output: Simplifies micro-adjustments to find the exact "sweet spot" for wet or dry skimming demands.

• Minimal Clearance Neck: Designed to drop straight into restricted cabinet layouts, needing only a fraction of an inch of overhead clearance to remove the cup.

Bioload Handling

• Heavy Bioload: 75 Gallons

• Medium Bioload: 90 Gallons

• Light Bioload: 130 Gallons

Online exclusive: this item is ordered in for you and is usually ready within a few business days. Choose in-store pickup, local delivery or shipping at checkout.