Reef Octopus

Regal 300INT 12" Internal Protein Skimmer (VarioS)

In stock

- +

BRS Recommended for tanks up to:

  • Heavy Bioload (Most Common) - 450 Gallons
  • Medium Bioload - 575 Gallons
  • Light Bioload - 700 gallons


Reef Octopus In Sump 12" Protein Skimmer from Reef Octopus - with a controllable VarioS DC pumps to process more or less water, depending on your setup.

  • Footprint - 18″ x 12.2″ 
  • Height - 25.4″
  • Recommended Water Height: 7"-8.5"


Reef Octopus Regal Skimmers now incorporate the new VarioS S pinwheel series of pumps. The new pumps are DC powered allowing for several advantages over traditional AC style pumps. The VarioS pumps can be fully controlled by a 3rd-party controller, or through the included control unit. With 5 different preset speeds, and multiple feed modes, you can fine-tune Regal skimmers for superior performance on your particular system.


Internal protein skimmers that have the pump mounted externally will normally be more efficient than a space saver model (internally mounted pump) due to the fact that there is more room in the skimmers reaction chamber and less overall turbulence. They do require a bit more space but if your sump can fit a protein skimmer that has an externally mounted pump you will see much better results.


Filtration Handling

Well Stocked Tank - Rated up to 450 gallons

Medium Stocked Tank - Rated up to 575 gallons

Light Stocked Tank - Rated up to 700 gallons



  • VarioS-6 DC controllable pump
  • Apex Ready
  • Safety overflow float switch for cup
  • 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
  • Detachable controller with waterproof union
  • 3rd-Party controller input (0-10V)
  • 2 year warranty on pump body
  • 1 year warranty on pump rotor (pinwheel impeller)
  • 1 year warranty on skimmer body


Skimmer Specifications:

  • Body Diameter: 12"
  • Neck Size: 7"
  • Foot Print: 18” x 12.2”
  • Total Height: 25.4”
  • Output Size: 50mm - 1.5”
  • Recommended sump water depth: 7 -8.5"


VarioS-6 S Pinwheel Pump Features:

  • Air Draw: 1200-2400 LPH / 42-84 SCFH*
  • Power Consumption: 35-70W
  • Voltage: DC 36V

*Aquarium set up will determine air and water results.


What's Included?

  • Regal 300 INT Protein Skimmer
  • VarioS-6 S Pinwheel Pump
  • VarioS Control Unit
  • Skimmer Cup Float Switch
  • Output Gate Valve


Available Accessories

  • Neck Cleaner: CL-300
  • Neck Extension: NK-300


More Information
SKU 210208
UPC 6950291251718

 Regal Skimmer Setup Guide

 VarioS Controller Quick Start Guide

Skimmer Type In-Sump / Internal
Capacity Light Bioload - Up to 700 Gallons
Medium Bioload - Up to 575 Gallons
Heavy Bioload - Up to 450 Gallons
Dimensions 18"L x 12.2"W x 25.4"H
Diameter 12"
Rec. Water Level 7" - 8.5"
Output Size 1-1/2 in.
Air Draw 1200-2400 LPH
Flow Rate 528 GPH
Pump Model VarioS 6-S
Pump Rotor Type Pinwheel
Variable Speed Yes
Power Type DC
Power Consumption 35 - 70 Watts
Power Cord Length 6 Feet
Warranty 2 Years (pump body), 1 Year (pump rotor), 1 Year (skimmer body)
Write Your Own Review
You're reviewing:Regal 300INT 12" Internal Protein Skimmer (VarioS)
Your Rating
Only registered users can write reviews. Please or

Product Questions

What sump do you sell that can fit this massive skimmer?
Question by: Reginald Bivens on Oct 13, 2022, 4:25 AM
Thanks for reaching out! You could put it in the large refugium section of this sump https://www.bulkreefsupply.com/triton44-v2-sump-trigger-systems.html . You would just switch the refugium and skimmer section purposes
Answer by: James Johnson (BRS Staff) on Oct 13, 2022, 4:05 PM