Reef Octopus 7" Regal 170EXT Recirculating Protein Skimmer

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Reef Octopus 7" Regal 170EXT Recirculating Protein Skimmer

SKU: 208693

reg. $659.99

Special Price: $579.99

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Quick Overview

Reef Octopus Recirculating External 7" Protein Skimmer from Reef Octopus - with a controllable DC pump to process more or less water, depending on your setup.

  • Rated for tanks up to 300 gallons

  • BRS recommended for tanks up to 200 gallons

  • DC-3500s controllable pump with 5 presets and a feed mode

The hybrid cone design reduces and stabilizes foam production resulting in less turbulence in the neck area and more time for the organics to rise and collect.


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Product Questions

Im starting a 24"x24"x60" 150 gallon with medium fish population and soft corals will this work?
Question by: Clinton Shaw on May 12, 2016 7:44:00 AM
Great question!
This skimmer will work great on a medium bio load 150 as the recirculating design will help to increase performance.
Answer by: Connor (Admin) on May 17, 2016 4:06:00 PM
Reef Octopus 7" Regal 170EXT Recirculating Protein Skimmer can i used this skimmer for my tank which is 72x24x24 which is stocked with fishes and softies and LPS.
Question by: avril on Aug 3, 2014 1:38:00 PM
Hi Avril,

I think this would be a great skimmer for that tank as we recommend it for systems up to 200 gallons. The DC skimmers provide a great level of control which means you can speed the pump up or down to get the best performance out of the skimmer for your system.
Just remember that you will need an additional pump to feed the skimmer water from your sump. I would recommend the Sicce Syncra 2.0 or 3.0 but any pump capable of moving 300-600 GPH will work. I would go with the 3.0 if you need to move water vertically or farther than a few feet from the sump to make sure you can come close to hitting that 600 GPH mark.

Hope this help! Have a great day :)

Answer by: Bulk Reef Supply on Aug 3, 2014 1:38:00 PM

Full Details

Reef Octopus® Regal 7” Recirculating External Skimmer REGAL-170EXT

Filtration Handling

Well Stocked Tank - Rated up to 140 gallons

Medium Stocked Tank - Rated up to 200 gallons

Light Stocked Tank - Rated up to 300 gallons


  • High quality cast acrylic
  • Easily disassembled for cleaning
  • Hybrid Cone Shape
  • High volume air intake
  • Body Drain
  • Quiet operation
  • Solid construction
  • Easily removed collection cup
  • Requires a separate feed pump (300-600 GPH)

Skimmer Specifications:

  • Body Diameter: 7"
  • Neck Size: 4"
  • Foot Print: 14.1” x 11.8”
  • Total Height: 23”
  • Output Size: 40mm - 1.25”

Reef Octopus Controllable DC3500s Pinwheel Pump Features:

  • Air Draw: 800-1200 LPH / 28-42 SCFH
  • Power Consumption: 25-40W
  • Voltage: DC 24V

*Aquarium set up will determine air and water results.

Manufacturer's Warranty

  • 2 year limited coverage on pump
  • 1 year on skimmer body


  • Neck Cleaner: CL-170
  • Neck Extension: NK-170