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Reef Octopus

Reef Octopus Classic 100-Hob Protein Skimmer

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Reef Octopus Classic 100 HOB Protein Skimmer

The Classic 100-HOB is a proverbial favorite amongst hang-on back skimmer users capable of filtering aquariums up to 105 gallons. The Classic 100-HOB features an easy to install and operate design in which the pump is mounted inside the aquarium. To install, simply place the skimmer on the back of the aquarium, mount the pump in place, adjust the intake strainer and it is ready to skim. The Reef Octopus Classic 1000-HOB is constructed of high-quality acrylic and equipped with the new highly efficient Aquatrance pinwheel pump that produces an ideal mix of water and air for optimal waste removal.


- Low Profile body
- Air Silencer
- Solid Construction

Rated for aquariums up to 105 Gallons

Footprint: 8″ x 3.75″ | Height: 17″
Powered by: Ultra-efficient Aquatrance 1000s pump

Filtration Handling
- 105 gallon – Light Filtration Demand
-   80 gallon – Medium Filtration Demand
-   60 gallon – Heavy Filtration Demand

Technical Specs
Footprint: 8″ x 3.25″
Total Height: 17″

Aquatrance 1000s Pinwheel Pump
Wattage: 9w
Air Draw: 420 lph / 15 SCFH*
Water Draw: 350 lph / 92 GPH*
*Air and water results will vary depending on aquarium setup

2 year warranty on pump and 1 year on skimmer body

Reef Octopus can not be responsible for consequential damages arising from installation or use of this product. Reef Octopus warrants the pump to be free from defects in material and workmanship under normal use and conditions for the warranty period from the date of purchase. CoralVue liability under this warranty shall be limited to repairing or replacing at CoralVue’s discretion, without charge. CoralVue will not be liable for any cost of removal, installation, transportation, or any other charges which may arise in a warranty claim.

NOTE: This warranty is void if the product is damaged through abnormal operating conditions, accident, abuse, misuse, unauthorized alteration or repair. This warranty is valid only in North America and is non-transferable. Consumable spare parts are not applicable to the warranty.

*Reef Octopus reserves the right to change/modify this product without notice.

Product code: 5042

4 Reviews

  • 2
    Cyanobacteria Affected

    Posted by HOBBLUES18 on Feb 13th 2019

    Unfortunately, a Cyanobacteria outbreak may have adversely affected this HOB protein skimmer more that Chemiclean treatments! It appears that every time I plug in the skimmer it OVERFLOWS the left chamber. This might be from red slime algae clogging the pump intake and making it unusable.

  • 5
    Best HOB ever IMO

    Posted by 89Delta on Mar 22nd 2018

    I bought one of these back in 2016 for my girlfriend on her 40 Breeder , and I have to say this skimmer kicks some serious butt. The tank is overstocked with corals from growth and 7 fish. It definitely pulls the crud out and then some. So here I am ordering another one for my 40 Breeder i'm starting.

  • 5
    Great HOB Skimmer

    Posted by Dakota on Sep 15th 2016

    I had multiple people suggest this skimmer for my 55g reef tank. Since space was an issue, I needed a HOB. I am not disappointed in this purchase one bit! It is very quiet, small, and get a lot of junk out of my tank. I could see clearer water almost immediately. Also, Aquacave got it delivered to me in record time!

  • 5
    Bang for your buck

    Posted by Zanymaster on Jun 30th 2016

    This is one of better HOB Skimmers out there.Easy to use,very quiet and little footprint.