Red Sea REEFER Skimmer (RSK 300 / RSK 600 / RSK 900)

The Red Sea REEFER Skimmer range delivers high-efficiency nutrient export for reef systems of all sizes. Engineered with REEF-SPEC flow dynamics, these skimmers maintain an optimal ORP (REDOX) level of over 350 mV through highly effective air–water contact. Designed to be quiet, powerful and easy to maintain, the RSK series includes three models — RSK 300, RSK 600 and RSK 900 — allowing reef keepers to select the ideal skimmer for their system size and bio-load.

Each model includes Red Sea’s signature ergonomics: Foam-View collection cup window, integrated neck cleaner, quick-release pump holder, and a hydrodynamic diffusion chamber for smooth bubble distribution. The result is stable performance, low noise, and effortless daily use.

 

Key Benefits

• High-performance REEF-SPEC skimming for systems from medium to heavy bio-loads

• Optimised bubble diffusion and high contact time for efficient waste removal

• Extremely quiet operation with silencer and vibration-absorbing mounts

• Fast, simple maintenance with click-in/out pump holder

• Flexible sump placement with 3-position base assembly

 

Core Features

• Ergonomic Diffusion Chamber
  Evenly distributes microbubbles without restricting air or water flow.

• Quiet Operation
  Large air intake silencer plus vibration-reducing feet and connectors.

• Foam-View Window
  Allows precise adjustment of foam height at a glance.

• Integrated Manual Neck Cleaner
  Helps maintain optimal performance between deep cleans.

• Flexible Installation
  Three assembly configurations for venturi inlet and regulator valve positioning.

• Easy Maintenance
  Quick-release pump holder, graduated collection cup, and drainage port with 1 m hose.

• Premium Pumping
  Powered by Sicce PSK skimmer pumps for reliable long-term performance.

 

Technical Specifications

RSK 300

• Recommended aquarium volume: approx. 300 L

• Pump: Sicce PSK

• Footprint: Model-specific

• Designed for medium to heavy bio-loads

RSK 600

• Recommended aquarium volume: approx. 600 L

• Pump: Sicce PSK

• Larger reaction chamber for increased air–water contact

• Suitable for medium to heavy bio-loads

RSK 900

• Recommended aquarium volume: approx. 900 L

• Pump: Sicce PSK high-output configuration

• Oversized diffusion chamber for maximum skimming efficiency

• Ideal for heavily stocked systems

Shared Specifications Across All Models

• Foam-View collection cup window

• Graduated measurement markings

• Integrated manual neck cleaner

• 1 m valved drain hose

• 3-position adjustable base

• Hydrodynamic bubble diffusion chamber

• Vibration-dampened pump mounts

• High-volume air intake silencer

 

Who Is This Product For?

• Reef keepers seeking high-performance, low-noise skimming

• Hobbyists running small, medium or large REEFER systems

• Users wanting easy-maintenance equipment with premium components

• Aquarists needing an upgrade that maintains consistent ORP and water clarity