Efficient - Quiet - Ergonomic

Our high-performance REEF-SPEC® Skimmers feature a combination of PSK pumps with proportionally sized venturi, bubble diffusor and reaction body that optimizes air-water contact time for steady waste removal.


Designed with hobbyists needs in mind, the REEFER™ Skimmers are really quiet thanks to rubber connectors which dampen the vibrations as well as a robust air silencer. With features like the FoamView™ window, built-in neck cleaner and extra-long valved waste tube, we guarantee an enhanced home reef filtration experience.


  • Ergonomic diffusion chamber evenly disperses the fine bubbles created by the PSK pump across the skimmer cone, without reducing air or water flow.
  • Quiet operation, with vibration absorbing components and a large air intake silencer.
  • 3 assembly options for flexible positioning of the pump inlet and regulation valve, according to your sump.
  • FoamView™ window in the collection cup to easily monitor and adjust the foam height.
  • Built-in manual neck cleaner.
  • Precision geared valve for positive flow regulation.
  • Quick release pump holder for ease of maintenance.
  • Drainage port with 1m valved hose.


High efficiency
PSK pump
Easy maintenance
Easy setup

Independent reviews


Ratings & Specifications

Skimmer Orientation

Compatibility chart

Independent reviews

Video reviews (1 of 6)

"This is the skimmer after being 1 week in my tank and so far I am really impressed with it. "

"Protein Skimmers - A Beginners Guide | Red Sea REEFER XL 425 Build"

"A full breakdown of why Ryan & Randy would use it on their own tanks! "

"How to Assemble, Dial In, & Maintain Your RSK Protein Skimmer"

"Ryan and Steve investigate whether the unit lives up to the hype!"

"This Skimmer provides a whole new level of reef aquarium filtration"

Written reviews (1 of 3)

"Red Sea RSK600: Review of the maintenance-free skimmer"

"REEFER Skimmer Review: Red Sea Still Knows How To Make Them Great"

"The Red Sea skimmer is an epitome of quality and powerful engineering that every aquarium should have."