Signature Protein Skimmers
Our MRC® Signature Series features the powerful and time-tested Beckett foam injection technology.

Simple
Easy installation with set and forget peace of mind. MRC® Signature Skimmers are built to work.
Capacity
From 100 gallons to 5,000 gallons, the +Series Signature skimmers are read for just about any system you could possibly throw at them.
Precision
All +Series™ Skimmers are precision made with the highest tolerances. We like things to be right and right the first time around.
Detail
We’re obsessed with the details at MRC®. Our demand for quality is so high, we even have our own custom thumbscrews made: precision threaded, food grade, and 100% American made.
We Expand with Your Success
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Overview
Up to 175 Gallons | Ozone compatible | High Quality 3/8″ Cell Cast Acrylic & 1/4″ Cell Cast Acrylic tube
+Series Signature Protein Skimmers have been successfully running aquariums for two decades. Our injector assembly uses a pressure differential to generate a massive quantity and quality of bubbles to maximize protein skimming. Historically, these have been powered by high pressure (high power) pumps, but with the advent of ultra efficient DC powered pumps, these skimmers are more potent and efficient than ever.
Utilized by professional aquarists and organizations worldwide, the MR-1 is the perfect solution for smaller systems. Don’t be fooled by the tiny footprint; it’s every bit as powerful as its big brothers.
Specs
System capabilities: 175 gallons
Total Height: 22.5″
Foot Print: 9″ x 5.5″
Number of Injectors: 1
Injector Input: 1″ SOC
Gate Valve (Standard): 1 1/4″
Recommended Pump: Sicce Syncra Silent 3.5 HP, BL-40HD (PW 100-PX), Ecotech Vectra M2
Overview
Up to 300 Gallons | Ozone compatible | High Quality 3/8″ Cell Cast Acrylic & 1/4″ Cell Cast Acrylic tube
+Series Signature Protein Skimmers have been successfully running aquariums for two decades. Our injector assembly uses a pressure differential to generate a massive quantity and quality of bubbles to maximize protein skimming. Historically, these have been powered by high pressure (high power) pumps, but with the advent of ultra efficient DC powered pumps, these skimmers are more potent and efficient than ever.
Utilized by professional aquarists and organizations worldwide, the MR-2 is the most popular +Series model. With a port for an optional second injector, you have a lot of skimming power at your disposal.
Specs
System capabilities: 300 gallons
Total Height: 24.5″
Foot Print: 10.5″ x 7″
Number of Injectors: 1 w/2nd optional
Injector Input: 1″ SOC
Gate Valve (Standard): 1 1/2″
Recommended Pump: Sicce Syncra ADV 7, BL-55 HD (PW 150PS), Ecotech Vectra L2


Overview
Up to 500 Gallons | Ozone compatible | High Quality 3/8″ Cell Cast Acrylic & 1/4″ Cell Cast Acrylic tube
+Series Signature Protein Skimmers have been successfully running aquariums for two decades. Our injector assembly uses a pressure differential to generate a massive quantity and quality of bubbles to maximize protein skimming. Historically, these have been powered by high pressure (high power) pumps, but with the advent of ultra efficient DC powered pumps, these skimmers are more potent and efficient than ever.
Utilized by professional aquarists and organizations worldwide, the MR-3 provides increased dwell times in the same footprint of the MR-2. Also equipped with a port for an optional second injector assembly.
Specs
System capabilities: 500 gallons
Total Height: 32.5″
Foot Print: 10.5″ x 7″
Water Inlet: 3/4″
Number of Injectors: 1 w/2nd optional
Injector Input: 1″
Gate Valve (Standard): 1 1/2″
Recommended Pump: Sicce Syncra ADV 7, BL-55 HD (PW-150PS) or BL-70 HD (PW-200PS), Ecotech Vectra L2
Overview
Up to 900 Gallons | Ozone compatible | High Quality 3/8″ Cell Cast Acrylic & 1/4″ Cell Cast Acrylic tube
+Series Signature Protein Skimmers have been successfully running aquariums for two decades. Our injector assembly uses a pressure differential to generate a massive quantity and quality of bubbles to maximize protein skimming. Historically, these have been powered by high pressure (high power) pumps, but with the advent of ultra efficient DC powered pumps, these skimmers are more potent and efficient than ever.
Utilized by professional aquarists and organizations worldwide, the MR-4 comes standard with the second injector assembly. The larger body allows for higher flow rates for more demanding systems.
Specs
System capabilities: 900 gallons
Total Height: 32.5″
Foot Print: 12″ x 12″
Number of Injectors: 2
Injector Input: 1″ SOC
Gate Valve (Standard): 1 1/2″
Recommended Pump: MRC-LP4200, Sicce Syncra ADV 10, BL-70 HD (PW-200PS), BL-100 HD (PW-250PS)


Overview
Up to 1,250 Gallons | Ozone compatible | High Quality 3/8″ Cell Cast Acrylic & 1/4″ Cell Cast Acrylic tube
+Series Signature Protein Skimmers have been successfully running aquariums for two decades. Our injector assembly uses a pressure differential to generate a massive quantity and quality of bubbles to maximize protein skimming. Historically, these have been powered by high pressure (high power) pumps, but with the advent of ultra efficient DC powered pumps, these skimmers are more potent and efficient than ever.
Utilized by professional aquarists and organizations worldwide, the MR-6 provides increased dwell times within the same footprint of the MR-4. Also comes standard with the second injector assembly.
Specs
System capabilities: 1250 gallons
Total Height: 48″
Foot Print: 12″ x 12″
Number of Injectors: 2
Injector Input: 1″ SOC
Gate Valve (Standard): 1 1/2″
Recommended Pump: MRC-MP6100, BL-100 HD (PW-250PS)
Overview
Up to 1,500 Gallons | Ozone compatible | High Quality 3/8″ Cell Cast Acrylic & 1/4″ Cell Cast Acrylic tube
+Series Signature Protein Skimmers have been successfully running aquariums for two decades. Our injector assembly uses a pressure differential to generate a massive quantity and quality of bubbles to maximize protein skimming. Historically, these have been powered by high pressure (high power) pumps, but with the advent of ultra efficient DC powered pumps, these skimmers are more potent and efficient than ever.
Utilized by professional aquarists and organizations worldwide, the MR-7 comes standard with the second injector assembly. The larger body allows for higher flow rates and increased dwell times for the most demanding systems.
Specs
System capabilities: 1500 gallons
Total Height: 60″
Foot Print: 16″ x 12″
Number of Injectors: 2
Injector Input: 1″ SOC
Gate Valve (Standard): 1 1/2″
Quick Release: Standard
Recommended Pump: MRC-MP6100, BL-100 HD (PW-250PS)

Find An Authorized Dealer
Purchase your +Series™ Signature Skimmer from an authorized MRC® retailer today.