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Reef Octopus Classic 1000 Hang-on-the-Back Protein Skimmer

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Reef Octopus Classic 1000 Hang-on-the-Back Protein Skimmer

95% Recommend this to a friend (63 of 66)

SKU: 204058
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Quick Overview

Hang on Back skimmer with pump mounted externally under the skimmer body. Unique design reduces heat exchanged to the water. Easy removal of the pump for cleaning and maintenance. Powered by one Aquatrance 1000 pump with improved venturi design and pinwheel impeller. Built with high quality acrylic.


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Previously Asked Questions

  • by Brandon on August 1, 2014, @12:20 PM

    Is it ok to place a media bag in the return side of the skimmer, or is it not enough flow to go threw the bag?

    Bulk Reef Supply Hi Brandon,
    I personally wouldn't put a filter sock on the skimmer itself. The main concern is that if the filter sock clogs up and reduces the output a little bit it could cause your skimmer cup to overflow all over the floor :(

    Do you find this question helpful?  Yes   No

Full Details

Reef Octopus Classic 1000 HOB Protein Skimmer Manual

Well Stocked Tank - Rated up to 55 gallons

Medium Stocked Tank - Rated up to 75 gallons

Light Stocked Tank - Rated up to 100 gallons

Skimmer Features:

  • Low profile body
  • Air silencer
  • Pump is mounted under skimmer body to reduce heat exchange to tank and reduce space needed for skimmer
  • Easily remove pump for cleaning and maintenance
  • Solid construction

Skimmer Specifications

  • Footprint: 8" x 3.5"
  • Height: 17"

Aquatrance 1000s Pinwheel Pump Features:

  • Power Consumption: 9 Watts
  • Air Draw: 420 lph/15 SCFH*
  • Water Draw: 350 lph/92 GPH*

*Aquarium set up will determine air and water results.


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

Item #: OCT-BH1000


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  • Works very well By Melody on 3/29/2015

    This skimmer is huge! I was worried about the weight on the tank, but so far so good. It cleans my tank well, but if I don't clean it, it smells! They may be due to the raw shrimp I feed my sea star. The piece that holds onto the tank arived broken, but I contacted the company and they sent me a replacement quickly.
  • WOW By Peter on 2/19/2015

    Although the instructions are not very good you get enough info from the picture. Mine has been running for 2 days. It's already pulling stuff out. It's quiet, and not very noticeable.
  • Good Quality HOB Skimmer By Adam on 1/20/2015

    I bought this for my 55g reef tank. It worked quite well, and was very effective and quiet given its small footprint. I eventually had to replace this skimmer with the BH-2000 when I began carbon dosing as the increased load was causing it to overflow out through the top and onto the floor.
  • Not for me By dannysreeftank on 1/11/2015

    Ordered this product because i have another tank with a sump running an internal reef octopus 110 nw, but didnt have the same experience with this one. I had two leaks on test run both due to the horrible directions that come with this product as you need to make sure all 3 o-rings are properly sealed. Next, i had it setup which seemed like would be a high quality product due to the materials that it was made out of, but could never get the product to work properly and had a over flow issue. The overflow issue is what made me decide to return the product as I felt it wasn't as safe as a internal skimmmer which would overflow in the tank vs the ground. I am currently in the process of returning with bulk reef supply after spending 30 dollars to ship back we shall see. So in short don't waste your money on this product its not worth the 3-4 hours of frustration,
  • coralvue has bad customer service By William on 12/30/2014

    The pump only lasted 6 months, dont waste your money.
  • good deal By Claude on 12/15/2014

    Works great on my 40 reef. Nice and quiet.
  • Good skimmer. By Crash on 12/13/2014

    Intake basket at it's highest was still way under water.Had to cut couple of inches off intake pipe to get basket up to skim surface. Collection cup is super tight fit. Very quiet pump. Overall = Me Like !
  • Good stuff By Crash on 12/12/2014

    I'm stuck in apartment and sump is impossible . I've owned Remora HOBs on my older small tanks but I like this better because pump is outside tank and runs very quiet on my 90 FOWLR . The only adjusting needed was to cut the intake pipe so it would allow intake basket to be higher , at water level , Original position meant water level had to be 3 inches below rim . Original pipe is too long . Been in hobby since 86 and this is best HOB I've used .
  • Can't get much better for a Mid to Upper size "Nano" By Chris on 8/13/2014

    Picked this up for my 29 gallon, choosing to go a few models up to keep the pump out of the tank and was glad I did. Great constriction, and clear so there is minimal visual impact. Super easy to set up even though mine was missing instructions. I wish there was more pipe lengths and suggestions for levels to put them at rather than trimming the existing ones, but a quick youtube search helps along with trial and error. Just make sure the return is high enough or you will get it to overflow on startup. After the setup, I was impressed how quickly if started to work. It was only a few days before it was pulling some really nasty gunk. Adjustments are wonderfully simple. One you have it dialed in there are little to no micro bubbles in the display, minor bubble spray, and a small piece of foam in the return pipe chamber further limits them. Quite quiet, just the minimal fizzing noise. I doubt I would be happier with ant other skimmer in the category.
  • Great Product By Harry on 7/18/2014

    I am new to reefing and BRS was very helpful in my choice. I have a 36 gallon bow front and it starting pulling gunk out within a couple of hours. It was packaged well an very easy to set up, however as previous people posted, I did have to cut down the intake tube. Very happy with this well built skimmer and would recommend it to anyone looking for a quality skimmer.
  • works perfectly! very happy. By derty kurty on 6/17/2014

    New to reefing and skimmers. i finally decidrd on this, after hours of research. It was easy to set up. I didnt find the instructions hard to understand at all like the reviews said. It didnt say where to set the collection cup but i just kept an eye on it for a while. I keep the bottom of the collection tube right at the top edge of the little overflow hole. Its doing its job very well, i dump half cups of yellow, stinky crap daily. Oh, shipping was fast as well, 3 days to missouri. Thanks brs.
  • Does what you need it to By Jennifer on 6/3/2014

    I do not have the set up or room on my main display tank to have a sump. so a HOB skimmer was pretty much my only option. this thing does deliver it pulls plenty out though I do set mine to run pretty wet. I found some good vids on Youtube that helped me set it up. the intake plumbing is a bit too low to actually skim the surface, so you might want to cut it down to size before you set it up. great buy

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