The Reef Octopus Classic 100 HOB Protein Skimmer is the entry level HOB skimmer design, and was previously called the BH100. The pump on the Octopus Classic BH100 is mounted externally so it will sit inside the aquarium. The BH-100 is a simple user friendly Hang On Back HOB skimmer ideal to skim small aquariums up to a 60 gallons. Simply place the octopus Classic 100 skimmer on the back of the aquarium, mount the pump in place as the instructions list and it is ready to skim. The Reef Octopus skimmers are powered by the Aquatrance skimmer pumps. All Octopus skimmers are built with high quality acrylic. The Octopus skimmers uses metric plumbing parts. The pump has an improved venturi design and pinwheel impeller. We developed a new pinwheel impeller that is being provided on all of the BH100
