Reef Octopus

Regal 300SSS 12" Space Saving Protein Skimmer (VarioS)

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BRS Recommended for tanks up to:

  • Heavy Bioload (Most Common) - 350 Gallons
  • Medium Bioload - 550 Gallons
  • Light Bioload - 700 gallons


Reef Octopus In Sump 12" Space Saving Protein Skimmer from Reef Octopus - with a controllable VarioS DC pumps to process more or less water, depending on your setup with a pump integrated into the body of the skimmer saving precious space in the sump.

  • Footprint - 15.2″ x 13″
  • Height - 25.6″
  • Recommended Water Height: 8"-10"



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.


Space saving protein skimmers have the pumps encased within the body of the skimmer creating a much smaller footprint requirement. These types of skimmers are normally a slight bit taller than their counterpart, the increased height maximizes the amount of contact/dwell time and reaction chamber size allowing for greater filtration capabilities.


Filtration Handling

Well Stocked Tank - Rated up to 350 gallons

Medium Stocked Tank - Rated up to 550 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: 15.2" x 13”
  • Total Height: 25.6”
  • Output Size: 50mm - 1.5”
  • Recommended sump water depth: 8"-10"


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 300SSS INT Protein Skimmer
  • VarioS-6 S Pinwheel Pump
  • VarioS Control Unit
  • Skimmer Cup Float Switch
  • Output Gate Valve
  • Metric to Standard Adapter


Available Accessories

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


pdf Regal Skimmer Setup Guide

pdf VarioS Controller Quick Start Guide

More Information
UPC 6950291251763
Skimmer Type In-Sump / Internal
Capacity Light Bioload - Up to 700 Gallons
Medium Bioload - Up to 550 Gallons
Heavy Bioload - Up to 350 Gallons
Dimensions 15.2"L x 13"W x 25.6"H
Diameter 12" Body, 7" Neck
Rec. Water Level 8" - 10"
Output Size 1.5" (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)
Pump Included Yes
Control Type Digital DC Control (Controller Included)
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Product Questions

I bought this for a future 250 gallon 50/75 gallon sump - heavily stocked with corals and as many fish as possible. The tank will be fed generously.
I will utilize a red sea fleece roller to complete my filtration.
Question is - should I have purchased a smaller skimmer ? Did I buy too big for my set up ?
Thanks guys
Question by: Jeff Parker on Mar 13, 2024, 4:40 PM
That skimmer may be a little bit large but if your system will be as stocked and overfed as you say, it should be okay in this instance.
Answer by: Scott F. (BRS Staff) on May 3, 2024, 3:50 PM
How tall is the base chamber without the collection cup?
Question by: Chris on Nov 23, 2023, 8:11 PM
Hi there, thank you for reaching out! It would be about 16.5" without the collection cup.
Answer by: Grace (BRS Staff) on Jan 25, 2024, 12:22 PM
Is this product safe for us with Ozone
Question by: Marc Knutsen on Nov 21, 2022, 12:27 PM
Thanks for the question! Reef Octopus skimmers are made of 100% ozone-safe materials. Please let us know if we can help with anything else!
Answer by: Kyle Thomas (BRS Staff) on Nov 26, 2022, 11:19 AM