Red Sea REEFER RSK-300 Protein Skimmer

Bring powerful, quiet, and efficient protein skimming to your reef with the Red Sea REEFER RSK-300 Protein Skimmer. Engineered for consistent waste removal and easy adjustment, the RSK-300 combines Red Sea's Reefer Skimmer chamber, Sicce PSK pump, precision regulator, and FoamView collection cup into a compact skimmer built for modern reef systems.

Designed for aquariums up to 240 gallons depending on bioload, the RSK-300 is an excellent choice for reef keepers looking for premium filtration with straightforward operation and maintenance.

Powerful, Efficient Skimming

The RSK-300 uses a Sicce PSK-600 pump with Red Sea's high-performance impeller to create a dense mixture of fine air bubbles for efficient organic waste removal.

The skimmer's diffusion chamber helps distribute bubbles evenly across the reaction chamber while reducing turbulence, creating stable foam production and consistent performance.

Precision Water-Level Control

Fine-tune skimmer performance with Red Sea's precision geared regulator.

The adjustment system provides smooth control over the internal water level, allowing you to dial in anything from a wetter skim to concentrated, darker skimmate based on your aquarium and nutrient load.

FoamView Collection Cup

Red Sea's FoamView window built into the collection cup makes it easier to monitor foam formation and determine when adjustments are needed.

The collection cup also features a built-in neck cleaner, helping remove organic buildup from the inside of the skimmer neck without requiring you to remove the cup for routine cleaning.

Flexible Installation

The RSK-300 features a compact footprint and flexible pump positioning, making it easier to integrate into different sump configurations.

Its approximately 21-inch height keeps the skimmer manageable while still providing the reaction volume needed for demanding reef systems.

Aquarium Recommendations

SPS / Heavy Bioload: Up to 80 gallons
Mixed Reef: Up to 160 gallons
Fish-Only / Light Bioload: Up to 240 gallons

Actual performance will vary depending on livestock, feeding, nutrient levels, and system configuration.

Key Features

Sicce PSK-600 skimmer pump
High-performance needle-wheel impeller
Precision geared water-level regulator
FoamView collection cup
Built-in manual neck cleaner
Quiet operation
Compact, flexible sump installation
Easy disassembly for maintenance
Designed for reef and marine aquariums
Red Sea engineering and build quality

Specifications

Model: REEFER RSK-300
Pump: Sicce PSK-600
Air Intake: Approx. 500 LPH
Water Flow: Approx. 1,000 LPH
Height: 21"
Recommended Water Level: 6–8"
Power Consumption: 20W
Installation: In-sump

Why Choose the Red Sea RSK-300?

The RSK-300 is designed for reef keepers who want more than basic nutrient export. From its precision adjustment system and FoamView cup to its efficient Sicce-powered skimming system, every component is designed around consistent performance, easier maintenance, and cleaner reef water.

Pair it with Red Sea filtration, reef care, testing, and supplementation products to build a complete Red Sea reef system.

Why Buy From Infinity and Beyond Aquatics?

Infinity and Beyond Aquatics offers premium reef equipment from trusted manufacturers including Red Sea, with equipment, filtration, lighting, water care, and accessories available together for complete aquarium builds and upgrades.

Shipping

FREE Standard Shipping

Orders typically process within 1–3 business days. Tracking information will be provided once your order ships.