Reef Octopus Classic 202-S 8" Internal Protein Skimmer

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Reef Octopus Classic 202-S 8" Internal Protein Skimmer

67% Recommend this to a friend (8 of 12)

SKU: 209568
In Stock: 35
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Quick Overview

The Reef Octopus Classic 202-S is an in-sump protein skimmer capable of providing powerful filtration for aquariums up to 265 gallons where sump space may be limited.

  • Refined Filtration at an Affordable Cost

  • Compact Footprint

  • Ultra-efficient Aquatrance 3000s Pump

  • In-Sump Application

  • Turbulence Reducing Super Cone Body

  • Solid Cast Acrylic Construction

  • Bubble Plate

  • Precision Control / Bubble Free Output

  • Efficient & Quiet Operation

  • Disassembles for Easy Cleaning & Maintenance

  • Super Cone Body Size: 8.27 to 5.12in

  • Footprint: 12.4in x 10in

  • Neck Size: 4.7in

  • Total Height: 23.2in

  • Output Size: 40mm / 1.25in


Suggested water depth:  7-9 inches



Full Details

Owners Manual


This Reef Octopus Classic Skimmer is constructed of high-quality cast acrylic that disassembles completely for cleaning. Its unique Super Cone "wine glass shape" body naturally stabilizes and concentrates the organic rich foam as it rises producing an enhanced foamation.

Fully equipped with a Reef Octopus Aquatrance 3000s pinwheel pump to produce the perfect mix of water and air for optimum waste removal.


Two(2) year on pump body

One(1) year on pump rotor

One(1) year on skimmer body


12 Items

  • Awesome skimmer By Joseph on 8/13/2017

    I was worried once i read some of the noise reviews. Phff no noise at all. Small slight hum, but this thing just works. I put in live sand and like most others, there was cloudiness from the sand. This skimmer pulled all of the cloudiness out of the water in 4 hours. Differently worth it. Im so glad I bought this one as oppose to some of the others one I looked at
  • Most bang for your buck By Dustin on 7/6/2017

    This skimmer is just runs in beast mode. Its like your old truck that just runs great and does everything you ask. Little noisy, yes, but I can't hear it in my cabinet. Adjustments is very easy. I have a light bio load on my 175 and need to clean this out maybe twice a week.
  • Overall it's a pretty good buy By Kizzy on 3/10/2017

    Let me just say that this skimmer looks amazing, it's very clean looking and you can tell that it's going to work. Like most skimmer, the first week is jus about tuning it in. Didn't pull as much gunk as i wanted to in the first run. The water output is silenced though this doesn't matter due to the actual sound. The sound is PRETTY loud, i have it under my cabinet and i can definitely hear it. Although people are exaggerating about how loud it is. It's in my room, and it doesn't bother me too much i can sleep peacefully. It's just sounds like a return pump that is out of the water. It's like a jet-like sound. Well, can't expect a beast to sound like a princess. Overall, this thing is definitely a beast.
  • Replaced my RedSea with this one on my RedSea Max-S500 By Izzy on 3/9/2017

    The moment I set up this skimmer was when it started skimming. It started to pull out dark skimmate within 36 hours of setting up my reef aquarium. My aquarium has been running for 9 months now with performance far exceeding my expectations. Reef Octopus for life!

  • Couldn't be happier By John on 2/26/2017

    Easy to set up, simple to adjust, clean. Started to skim within 24 hrs. very quiet. I read a poor review here someone wrote about it being loud. Almost didn't buy it because of this noise complaint. I'm glad I went ahead with it and couldn't be happier.
  • Very loud! By Stephen on 12/3/2016

    Skimmer is large, and very easy to set up. It also works great and pulled junk out in a few hours. However, the noise level from it is incredible. It sounds like a turbine on a jet just idling. I upgraded from my Reef Octopus 150S, and this skimmer is much, much louder. Think the noise is coming from the air intake, might mess with that to reduce the noise level.
  • Sounds like a jet liner By Chris Wincek on 11/26/2016

    Ive had this almost a year. It's extremely loud and can be heard throughout my entire house. Coral vue has quit trying to troubleshoot the issue so I'm left with junk. DO NOT BUY THIS SKIMMER
  • Skims great but extremely loud. By Christopher on 11/23/2016

    Had this skimmer for almost a year. Skims good but sounds like a jet liner. The noise it makes can be heard throughout my entire 3 bedroom house. No help from coral vue.
  • Excellent product By DannyC on 8/9/2016

    This skimmer is great a lot bigger than I expected high quality built unit it performs great pulling waste out of the water no complaints
  • Very nice skimmer By Scott on 2/21/2016

    Running this skimmer on 120 gal reef tank in a 55gal sump. Assembly was quick and easy. Started pulling decent skimmate in about 2 days. Would definitely recommend this unit to others.
  • STARTED SKIMMING WITHIN 3 HRS By Michael on 2/3/2016

    This skimmer started skimming within 3 hours of setting up my new reef tank with live rock. This skimmer has incredible adjustability also. I love it!
  • Great Skimmer, super efficient By Ray on 10/20/2015

    I bought this skimmer to replace my reef dynamics 180 for my mixed reef 180 gallon aquarium. I set this skimmer up on Thursday evening and had half a cup of skimmate by Saturday afternoon. It was the easiest skimmer I have owned to adjust, it is very quiet and doesn't take up to much space in the sump. The skimmer was easy to assemble, I have no micro bubbles that enter my tank. I keep my water level in the sump just at the bottom level of the discharge 45 degree angle pipe. You will see a hole drilled on the top of the 45 degree angle discharge pipe, I just keep the water level below.


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Product Questions

what is the difference between a internal and external pump beside the given one is inside and other isnt
Question by: john on Jan 25, 2016 8:55:00 PM
Great question!
The difference will vary on the pump, Many submersible pumps can be used externally depending on how they are plumbed. The main difference if with external pumps such as Pan world and Iwaki they will have none water proof components. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 3, 2016 12:36:00 PM
first question. all other skimmers there is a brs rating for the skimmer not this one could you give you tank size recomendation for this skimmer? 2nd says total hight is 23" how much space should there be to get the cup off? building my own stand and wanna make sure can get it off. 3rd gonna be on a 120 with 55 gallon sump would you recommend this product or can you give me another option in this price range? ty very much sry so many questions.
Question by: bj on Mar 16, 2016 4:31:00 PM
Great question!
This skimmer will be on average around 150 gallon, With a heavier bioload at 120 gallon. You will need an additional 2 inches to clear the skimmer collection cup comfortably. This skimmer is a great option for a tank of your size with a heavier bio-load. Alternatives include the Vertex 180i or 200i and the Skimz SM163. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 16, 2016 6:58:00 PM
will this fit my 50 gallon sump 12" by 48"
Question by: jm on Dec 21, 2015 3:50:00 AM
Great question!
The foot print of this skimmer is 12.4in x 10in. This could fit if you have 12" x 48". Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 6, 2016 5:51:00 PM
The manufacturer recommends this skimmer for up to 265g, what does BRS rate this? I currently run a 150int on my 125g with a heavy bioload and am looking to upgrade.
Question by: Jeremy Krolak on May 4, 2016 8:50:00 AM
Great question!
We can comfortably rate this skimmer on 250 gallon light bio-load, 190 medium and 150 heavy bio load. This would work well on the heavily stocked 125.
Answer by: Connor (Admin) on May 4, 2016 3:15:00 PM
Will this Skimmer fit in a Trigger Ruby sump 36? Looking for a good skimmer for a heavy bio load of 125 gallon that will fit. Kind of limited to this brand skimmer because I want the Reef Octopus Automatic Skimmer Neck Cleaner and do not see the other brands having them. Will the ANC with 200 Lid fit this sump?
Question by: Brenden on Jun 24, 2016 2:35:00 PM
Hey there! It looks like the skimmer footprint is 12.4in x 10in and the sump skimmer chamber is 17.5″ x 12.5″. According to those dimensions, it looks like it will fit! :-)
Answer by: Randy (Admin) on Jul 1, 2016 9:50:00 AM
Will this skimmer fit in a 12 inch by 13 inch area?
Question by: Ryan on Jun 12, 2016 6:04:00 PM
Great question! The product specs for the footprint is 12.4in x 10in. So it will fit in a 12" x 13"! :-)
Answer by: Randy (Admin) on Jun 15, 2016 10:10:00 AM