Reef Octopus Classic 110INT 4” Internal Protein Skimmer

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Reef Octopus Classic 110INT 4” Internal Protein Skimmer

96% Recommend this to a friend (76 of 79)

SKU: 204061
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Quick Overview

  • Manufacturer Rated for tanks up to 100 gallons

  • BRS recommended for tanks up to 75 gallons

In sump skimmer. Powered by Aquatrance 1000 pump with an improved venturi design and pinwheel impeller. Built with high quality acrylic. Gate valve allows for more precise control of water level. 1/2" clearance required to remove collection cup for easy cleaning.


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Full Details

Reef Octopus Classic 110INT Manufacturer's Manual

  • Reef Octopus 4" Classic INT Skimmer CLSC-110INT
  • Dimensions: 10.6" x 6.75" x 19.75"
  • Manufacturer rates skimmer for tanks up to 100 gallons
  • BRS Recommends this skimmer for tanks up to 75 gallons
  • Powered by Aquatrance 1000 pump
  • High performance venturi air injection system
  • Modified cone neck design designed for easy transition of micro bubbles into cup
  • Precision controlled gate valve
  • In sump only
  • 1 year warranty on skimmer and pump
  • Metric plumbing parts.


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  • quiet By j roush on 12/16/2014

    this skimmer is super quiet and started skimming immediatly
  • Good but. . . By Ryan on 11/25/2014

    This is a great skimmer but in the first year I've already had to replace an impeller because it broke in half. other than that its a great skimmer and the smell of the liquid coming out is like sewage so that's nice.
  • Perfect fit By Johnny Sea on 10/25/2014

    I have a small sump and had very limited space. This skimmer works very well and easy to adjust.
  • Great skimmer for a good price. By Camellia on 10/9/2014

    I've been using this skimmer for over a year and have had it on two builds. Currently it's on a 75 gallon with 20 gallon sump and still working like a champ.
    I was a newbie when I bought this, it was my first skimmer and I had little problems getting it dialed in and skimming nice.
    It needs a good vinegar bath every 6 months or so for best performance.
  • Great Skimmer By Jordo on 9/25/2014

    This is an excellent entry level skimmer. I purchased this for my new 75G build. I have a total water volume of 90ish gallons and this skimmer keeps up great. Started to produce good dark gunk after 3 or 4 days of breaking in. 1st week it was really dark the started to lighten up so I know it outperforms at my level of bioload. Excellent performance for its price point. I would recommend!
  • Works By Skrappy on 8/31/2014

    Works well, easy to install.
  • Good Skimmer By DE on 8/25/2014

    This is a good skimmer and I like how it works, but I have to say that in the beginning I had problem adjusting the foam level in it and I did a modification to it that worked well. Basically, I added two control valves on the skimmers air intake; this way I precisely managed and controlled the level of foam. That being said, I think the manufacturer should have done this in the first place. Anyway, it works great now. Anyone, who has the same problem email me and I will send you instructions on how to do it.
  • Good Quality Skimmer for a Fair Price By Chris on 7/22/2014

    I ran this skimmer for about 7 months on about 85 gallons of system water with no problems and good results. Relatively quiet pump for the price. Pulled good skimate after about a week, but continually got even better once fully broken in and dialed in.
  • Value By q on 7/16/2014

    for the price, it works wonder. using this skimmer on a 75 gallon with no problem
  • Great skimmer value By John on 7/7/2014

    I have a 75 gallon mixed reef with a 29 gallon aquarium used for my sump, divided into three chambers. This skimmer fits nicely into my first chamber. After shopping around and reading the reviews I am glad I bought this one. I have had it for 18 months now and it is still working great.
  • Pretty good skimmer By AJChurch on 6/19/2014

    Been running for a while a good skimmer for the money built well. Started pulling skimate within 4 hours. Does a good dry skim. So far working well.
  • Great deal By Charles on 4/26/2014

    Perfect fit for my new sump. After shopping around and reading the reviews I am glad I bought this one. I have had it for 10 months now and it is still working great.

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