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Red Sea Protein Skimmer RSK-600


Starting at $41/mo with . Learn more

Item #: RS1260

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Red Sea Reefer RSK Protein Skimmers - Efficient - Quiet - Ergonomic

Red Sea Reefer Skimmers are powered by Sicce`s PSK Skimmer Pumps, a pump well known among hobbyists around the world for their efficient output.

The silent operation of the Reef Skimmers are attributed to the large air intake silencer, and the vibration dampening feet and connections.

The diffusion chamber of the Reefer Skimmers disperses microbubbles produced by the PSK skimmer pump evenly through the conical ergonomic body, while maintaining air and water flow.


  • FoamView window for foam regulation
  • Neck cleaner integration
  • Drain port connection with 3 foot draining hose
  • Graduated collection cup to monitor skimmate production
  • Highly effective air silencer
  • High volume reaction chamber
  • Sicce PSK Skimmer pump
  • Two positioning options for the skimmer pump
  • Precise gate valve for skimming control
  • Vibration reducing footing

RSK Ratings





SPS Tanks: 80 Gallons / 300 Liters 160 Gallons / 600 Liters 240 Gallons / 900 Liters
Mixed Reef Tanks: 160 Gallons / 600 Liters 320 Gallons / 1200 Liters 500 Gallons / 1800 Liters
Fish Only Tanks: 240 Gallons / 900 Liters 500 Gallons / 1800 Liters 740 Gallons / 2700 Liters


Sicce Pump Model: PSK-600 PSK-1000 PSK-1200
Air Flow (GPH/LPH): 130 / 500 195 / 750 235 / 900
Water Flow (GPH/LPH): 265 / 1000 400 / 1500 530 / 2000
Dimensions: 9.1L x 8.3"W x 21"H 10.2"L x 9.4"W x 22"H 11.4"L x 10.6"W x 23"H
Recommended Water Depth: 6-8" / 16-20cm 7-8" / 18-20cm 8-9" / 20-24cm

Compatibility Chart





Reefer Nano
Reefer 170
Reefer 250 V1
Reefer 250 V3 **
Reefer 350 V1 * *
Reefer 350 V3
Reefer XL 425 V1 * * *
Reefer XL 425 V3
Reefer 450 * *
Reefer XL 525 V1 * * *
Reefer XL 525 V3
Reefer XXL 625
Reefer XXL 750
Reefer Peninsula 500
Reefer Peninsula 650
Max E-170
Max E-260
Max S-400
Max S-500
Max S-650 ***
*Skimmer may need to be raised, **Refugium wall will need to be removed, ***Place in reactor chamber

Manufacturer information

With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.

The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.

For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.

Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.

Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.

5 Stars


Reviewed on
April 24, 2019

Yes, I would recommend this.

Reefer-RSK 600

Pros: 1. The 3 foot hose makes for easy emptying. 2. The sleek design 3. Very powerful 4. Pretty quite 5. The collection cup cleaner and large size

Cons: 1. Price 2. Metal screw on Pump 3. Flow valve regulator seems a bit flimsy.

Very powerful protein skimmer. Has a nice sleek design. Pretty easy to install. I absolutely love the 3-foot drainage hose for easy drainage. The neck cleaner integration is a pretty nice feature too! The packaging was done well by the company. The gate valve for skimming does seem a tad flimsy. The only question I have is that they used a metal screw on the pump. (future rust potential). Overall, I love it and very happy with the purchase.

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Reviewed on
April 20, 2019

Yes, I would recommend this.

Really well designed

Pros: Configurable, neck cleaner, drain hose with close valve and very clear directions

Cons: None so far

I was a little apprehensive about buying a new product without any posted reviews, but I relied on Red Sea’s stellar reputation and ordered the RSK 600 for my heavily stocked 109 gallon mixed reef. I have limited sump space, made smaller by pvc plumbing and I was a little worried about how the skimmer would fit. This skimmer was engineered to be configurable. Good thing for me because I managed to fit it perfectly after several reconfigurations. The parts seem very high quality. The directions are very clear and assembly was easy. This skimmer has a built in neck cleaner which allows for easy daily maintenance. They function like windshield wiper blades to clean the neck with a quick turn of a knob. The collection cup only needs to come off for cleaning every 10 days. There is an included drain hose with valve for easy draining of the cup between cleanings. It was pulling gunk after only a few hours. The price is similar to other high end skimmers, but there seems to be more value with these additional features. Pulling gunk after a few hours. Very pleased so far.

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