Red Sea

RSK 900 Reefer Internal Protein Skimmer

In stock
Out of stock

- +

Protein Skimming Reinvented 

Efficient  |  Quiet  |  Ergonomic


Red Sea Recommends for tanks up to:

Light Bioload - 740 gallons

Medium Bioload - 500 gallons

Heavy Bioload (most common) - 240 gallons


Red Sea Reefer Internal Protein Skimmers are designed with the hobbyist needs in mind. From quiet rubber feet, a robust air silencer, and not to mention the FoamView window with built a built-in manual neck cleaner, all which are focused towards easier maintenance along with a quieter reef tank. Starting at the top, Red Sea's Reefer Skimmers now include a built-in neck cleaner that can be manually turned to remove any build-up from the walls of the neck, while the integrated FoamView window lets you see how the foam is collecting in the neck. Along with the included cup-drain tube, emptying the collection cup is only requires a turn of a valve, and is also super easy to connect to an external waste collector. Moving down, every Red Sea Reefer Skimmer includes a Sicce PSK pump for enhanced performance and reliability that pushes a balanced amount of air and water through the hydrodynamically efficient bubble diffuser setting them up for a turbulent free ride into the collection cup. 

  • Integrated Manual Neck Cleaner
  • High Flow Air Silencer
  • Simple to Maintain and Disassemble
  • Easy to Tune Water Level Control
  • Vibration Reducing Feet and Connectors
  • Includes Collection Cup Drain Line & Valve
  • Multiple Pump Orientations for Sumps with Tight Spaces



Footprint* - 11.4" x 10.6" or 12.6" x 9.4"

Height - 23"

Recommended Water Height - 8" - 9"

Air Flow - 900 LPH (235 GPH)

Water Flow - 2000 LPH (530 GPH) 


*Footprint can be changed depending on the pumps orientation inside of the skimmer body


What's Included?

1x RSK 900 Reefer Protein Skimmer Body

1x RSK 900 Reefer Collection Cup with Neck Cleaner

1 Meter RSK 900 Reefer Drain Hose with Valve

1x RSK 900 Reefer Air Silencer with Pump Feed Hose

1x Sicce PSK Pump


Owners Manual Owners Manual

More Information
UPC 730773505098
Skimmer Type In-Sump / Internal
Capacity Light Bioload - Up to 740 Gallons
Medium Bioload - Up to 500 Gallons
Heavy Bioload - Up to 240 Gallons
Dimensions 11.4"L x 10.6"W x 23"H or 12.6"L x 9.4"W x 23"H*
Rec. Water Level 8" - 9"
Air Draw 900 LPH
Flow Rate 530 GPH
Pump Model Sicce PSK-1200
Pump Rotor Type Needlewheel
Variable Speed No
Power Type AC
Power Consumption 20 Watts
Power Cord Length 7 Feet
Additional Notes *Footprint can be changed depending on the pump's orientation inside of the skimmer body
Pump Included Yes
Gallons Per Hour 300 - 600 GPH
Write Your Own Review
You're reviewing:RSK 900 Reefer Internal Protein Skimmer
Your Rating
Only registered users can write reviews. Please or

Product Questions

No questions yet. Be the first to ask the question!