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Octo Classic 2000 HOB Protein Skimmer
SKU: CLSC-2000HOB
MSRP: $ 404,24
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Available Through Authorized Retailer
- No Sump Required: Premium hang-on-back (HOB) design hooks directly onto the rim of your display tank, allowing for industrial-grade filtration without a sump.
- External Pump Layout: The high-volume Aquatrance 2000s pump is mounted externally underneath the skimmer chassis, minimizing needed wall clearance.
- Zero Heat Transfer: By positioning the pump motor outside the aquarium water column, it eliminates heat transfer to keep your tank temperatures stable.
- Surface Skimmer Box: Includes an adjustable surface-skimming intake attachment to continuously strip oily organic film from the water's surface.
- High-Capacity Low Profile: Built with a space-saving rectangular body footprint (10 in x 4 in) that hugs the back glass of large marine displays.
- Quiet & Calm Output: Outfitted with an integrated air silencer and a bubble-dampening discharge assembly to eliminate micro-bubble feedback.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus Classic 2000-HOB Protein Skimmer
The Reef Octopus Classic 2000-HOB (SKU: CLSC-2000HOB) is a high-capacity hang-on-back protein skimmer designed to deliver professional-grade organic waste removal to large marine aquariums up to 200 gallons without the need for an underlying sump system. Engineered specifically for serious hobbyists with standalone reef setups or heavy-bioload fish-only systems, the Classic 2000-HOB maximizes space efficiency. By positioning its powerful Aquatrance 2000s pinwheel pump externally underneath the main skimmer housing rather than inside the tank, you only need 4 inches of clearance behind your aquarium while completely isolating pump motor heat from your sensitive livestock.
Constructed entirely from premium, heavy-duty cast acrylic, this external hang-on unit features an adjustable surface skimmer box that actively skims the water line to break up the organic slick that impedes vital gas exchange and light penetration. Inside the large reaction chamber, the Aquatrance pump aggressively chops air and water into a dense cloud of micro-bubbles, stripping out dissolved proteins before they can degrade into harmful nitrates and phosphates. With its massive collection cup, simple O-ring adjustments, and modular construction, the Classic 2000-HOB is a powerhouse option for pristine water quality.
Key Features
Heavy-Duty Sump-Less Performance: Easily hangs on the rim of large aquariums, bringing advanced filtration to non-plumbed systems.
Aquatrance 2000s Pinwheel Pump: Infuses a massive 720 L/H of air pull into the reaction chamber while running at an efficient 18 Watts.
Dual Chamber Internal Geometry: Separates the chaotic bubble reaction zone from the water return chamber to drastically limit micro-bubble bypass.
Surface Degreaser Attachment: Continuously strips protein-heavy surface film to improve water clarity and light penetration.
Bubble-Dampening Assembly: Utilizes specialized foam sponges to calm the discharge water column as it returns to the display.
Bioload Handling
Heavy Bioload: 80 Gallons
Medium Bioload: 120 Gallons
Light Bioload: 200 Gallons
What’s Included:
(1) Reef Octopus Classic 2000-HOB Skimmer Body
(1) Aquatrance 2000s Pinwheel Pump
(1) Surface Skimmer Intake Assembly
(1) Integrated Air Silencer & Airline
(1) Discharge Foam Sponge Assembly
Technical Specs:
Model / SKU: CLSC-2000HOB (Formerly BH-2000)
Footprint: 10 in x 4 in
Total Height: 21 in
Pump Wattage: 18W
Air Draw: 720 L/H (25.2 SCFH)
Water Draw: 750 L/H (198 GPH)
Reef Octopus Aquatrance 2000s Pinwheel Pump Information:
- Max Flow: 198 gph
- Max Air: 720 lph / 25.2 SCFH*
- Wattage: 18w (60Hz)
- Dimensions: 4.5in x 2.4in 3.6in
*Air and water results will vary depending on aquarium setup
WARRANTY
CoralVue, Inc. and Reef Octopus hereby guarantee this product to be free from defects in material and workmanship for a period of:
- Five (5) year warranty on pump body/housing
- Three (3) year warranty on Reef Octopus-branded controller
- One (1) year warranty on Power Supply, Impeller (and components), Rotor, Rear Bushing, and Gaskets
Warranty is activated on the date of purchase.
This Standard Limited Warranty applies and is limited as follows:
- To the product only as long as it remains in the possession of the original purchaser.
- To the product that has not been subject to accident, misuse or abuse.
- To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
- That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
- That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
- Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.
- Assemble the intake piping, surface skimmer box, and the external Aquatrance 2000s pump according to the product manual diagram.
- Hang the skimmer body securely onto the back or side plastic frame of your aquarium, leveling the chassis with the plastic adjustment screws at the base.
- Manually fill the skimmer body compartments with aquarium water until the internal level reaches approximately 8 inches (20cm).
- Pinch or close the air silencer tube completely to prevent the pump from "coughing" dry air, then plug the power cord into a GFCI outlet.
- Once the pump primes and starts pushing water steadily, release the airline to begin active micro-bubble injection.
- Adjust the collection cup height using the integrated rubber O-ring to position the foam line right at the lower base of the inner neck.
Pro Tips:
- Priming via the Airline. When turning on the Classic 2000-HOB for the first time or after a deep cleaning, if the pump struggles to catch its siphon, cover the air intake hole on the silencer with your thumb for a few seconds. This creates a temporary internal vacuum that forces water into the pump chamber, quickly pulling a full siphon.
- Manage the Output Sponges. The black and blue output sponges are highly effective at capturing stray micro-bubbles, but they will trap detritus over time. Pull and rinse these sponges under a tap weekly during cup maintenance to prevent restriction, which can cause water to back up and flood the skimmer collection cup.
- Keep the Venturi Unclogged. Because the pump is positioned underneath the skimmer body, dust and salt spray can settle into the small gray venturi nipple where the airline connects. If you notice a drop in micro-bubble volume or the water line inside the body keeps rising on its own, clear the nipple with a toothpick or run a tiny squeeze of warm RO/DI water down the airline to dissolve any salt plugs.