Reef Octopus Classic 110SSS 5" Internal Space Saving Protein Skimmer

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Reef Octopus Classic 110SSS 5" Internal Space Saving Protein Skimmer

100% Recommend this to a friend (15 of 15)

SKU: 209587
In Stock: 49
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Quick Overview

The sleek and compact Reef Octopus Classic 110SSS in-sump protein skimmer supplies powerful filtration for aquarium systems up to 120 gallons where sump space may be limited.

  • Small Footprint - Big Performance

  • Reef Octopus Aquatrance 1000s Skimmer Pump

  • Removable Turbulence Reducing Bubble Plate

  • Disassembles for Cleaning

  • Quiet and Energy Efficient Operation

  • Latest Output Design for Quiet Bubble-free Outflow

  • Solid Acrylic Construction

  • Body Size: 5in  

  • Footprint: 6.1in x 7.87in

  • Total Height: 19.7in

  • Output Size: 1.25in

Recommended sump water height: 7"-8"

BRS Recommended Tank Size:

Light Stocked - 90 Gallons

Medium Stocked - 65 Gallons

Heavily Stocked - 40 Gallons



Full Details

Owners Manual


Recommended sump water height: 7"-8" 


BRS Recommended Tank Size:

Light Stocked - 120 Gallons

Medium Stocked - 75 Gallons

Heavily Stocked - 40 Gallons


The Reef Octopus Classic 110SSS is constructed of high-quality acrylic that can be completely disassembled for cleaning. Equipped with the new Aquatrance pinwheel pump, it produces an ideal mix of water and air for optimum waste removal. A simple vented wedge valve output provides precision control and allows cleaned water to exit the skimmer below water for quiet operation. Also available in the Larger Classic 150SSS model.

Internal model designed for in-sump use only. No feed pump required, skimmer draws water directly from sump.


  • 2 year warranty on pump
  • 1 year on rotor
  • 1 year on skimmer body



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  • Works great By Dustin on 9/21/2017

    I did a lot of research on skimmers before I decided on this one. I have not been disappointed. My water is clean and my fish are happy. The directions were a little vague but its not that hard to figure out. It has 5 screws and a pump, its not that hard. You wont be disappointed and your tank will be happy with this skimmer.
  • Great Skimmer! By BearTrap26 on 8/1/2017

    I have a 54 Gallon Bowfront reef tank. I had it for 7 months and never had a skimmer and had no issues. I had been adding fish and corals and realized eventually everything would grow and start putting more nitrates in and might eventually pose a major problem. This set up was perfect for my sump since there is very little room. After getting it dialed in and after a couple of break in days it began to produce a good amount of skim mate. Great product, I highly recommend it!
  • Super easy to setup: Video out of date and directions are lacking By Timothy on 5/10/2017

    So I got the Octopus 110sss to fit in my Trigger Emerald 26 sump. Fits PERFECTLY! I had to assemble the red tube in the sump due to the tank stand being low, but no problems getting the cup off.

    Directions are poor, and so I went to Youtube to watch the video. The video is different then the one I was sent. Evidently its been upgraded, but the video has not.

    However, its super easy to install, and the video is good enough.

    Started skimming right away. Most say it takes 3 or 4 weeks to really dial in, so more later!
  • Lovin' it so far. By Joshua on 5/8/2017

    I spent the extra money for the SSS and i'm glad i did. I have limited space in my sump and it has worked perfectly so far. Extremely quiet and has cleaned my tank so well. Looking forward to see what it can really do once my tank is fully stocked.
  • Reef Octopus 110 By WayneN on 3/29/2017

    Excellent skimmer, extremely quiet and very compact.
  • impressed By it just works on 3/11/2017

    This skimmer isn't finicky or fancy, it doesn't have a special break in procedure. It just works well and very fast. Noise level is average and cannot be heard unless you open your cabinet and get close to it. I have zero complaints and will use Reef Octopus more often.
  • Nice skimmer By gary on 2/7/2017

    This thing is dead quiet and works very well. I'm very happy with it. It's a little hard to put together with the provided instuctions. And the air line does not connect to anything, it just sits in the tube.
  • Fantastic skimmer! By Marc on 12/2/2016

    This skimmer is essentially dead quiet and puts out great skimmate. I wanted to replace my Seaside CS5.5 because it frequently vibrated sporadically. The build quality is excellent too.
  • Great skimmer By Luis on 7/11/2016

    Skimmer is pulling some good skimmate but I feel that I could be dialing it in better but haven't hit that sweet spot just yet
  • settings By slone64 on 7/10/2016

    i wish it was better explained about getting it dialed in for the amount of bubbles and the pushing up through the tube. seems to work best at the deeper end of 8". working well otherwise.
  • Awesome skimmer, especially for the price! By DeepBlue45 on 6/30/2016

    Couldn't be happier with this skimmer. I was concerned because I changed my sump design so was going from a more expensive external recirculating skimmer to this in-sump model. Basically I had it assembled and in the sump in about 15 min and it was pulling out dark thick skimmate with minimal adjustments required. It's also dead quiet. Maybe I got lucky and it works well with my set-up but very impressed.
  • New Set up By Btonben on 2/18/2016

    Installed this skimmer on my 110 gallon soon to be reef tank. It's pulling out a lot of junk. Well worth the price.


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Product Questions

How much room is needed to remove the collection cup for cleaning? I have 21 inches of room under my stand
Question by: Dooley on Jan 4, 2017 6:09:00 PM
Great question! You will need to account for 2"-2.5" for skimmer cup removal. :-)
Answer by: Randy (Admin) on Jan 11, 2017 11:55:00 AM
I wan to run his on my 40 breeder set up is this a solid option for a mixed reef with a heavy Bioload ? Also what's he return policy? I've read a few comments saying reef octopus/ coralvue skimmers can't be returned
Question by: Jamaal on Feb 9, 2016 2:09:00 PM
Great question!
The 110 is a great option and will handle a very heavy bioload on a 40 gallon. Our return policy is new and unopened boxes. If the items have been opened unfortunately all warranty and support will be through Coralvue directly. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 9, 2016 5:54:00 PM
Are the reef octopus skimmers ozone safe?
Question by: Robert on Apr 17, 2016 6:40:00 PM
Reef Octopus skimmers are made of 100% ozone-safe materials.
To avoid injury, you should research and take every precaution to properly inject and vent Ozone.
Answer by: Connor (Admin) on Apr 25, 2016 6:21:00 PM
What flow rate through the sump is best for this skimmer? I'm planning on a 600gph MAX return/overflow rate. Heard it's best to match all of these up
Question by: Joseph Collom on Mar 25, 2016 7:09:00 AM
Great question!
For skimmers it is typically recommended for 10x your system volume. As low as 5x can still work will and will give slightly more contact time for any elements. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 28, 2016 10:40:00 AM
My questing regards assembly. My tank is running and I want to add a protein skimmer. My sump is in the cabinet with limited space to maneuver a tall skimmer into the sump. How much assembly is required for the Reef Octopus Classic 110SSS 5" Internal Space Saving Protein Skimmer, and is it possible to install piece by piece?
Question by: Nathan on May 18, 2016 3:25:00 PM
Great question!
The skimmer is pre built from the body down, only the stand pipe and the collection cup. Feel free to let us know if you have any further questions.
Answer by: Connor (Admin) on May 18, 2016 3:29:00 PM
What cfm air pump is required? Does it need to accurately control the air flow rate?

Does it require a water pump? How many GPM on the water pump?
Question by: Douglas Goth on Jun 5, 2017 7:58:00 AM
This skimmer model includes its own feed pump which is responsible for water turnover as well as air draw through venturi action. There is no need for a separate air pump or feed pump.

Have a great day!
Answer by: Zack (Admin) on Jun 9, 2017 3:57:00 PM