Octo Aquatrance 1800S Skimmer Pump
SKU: AQ-1800S
High-Efficiency Fractionation: Features a specialized structural pinwheel impeller that systematically shreds air and incoming water into a dense, creamy micro-bubble cloud.
Ultra-Low Energy Draw: Engineered around an optimized, eco-friendly motor block that consumes a mere 11 watts of electricity while operating at full capacity.
Direct OEM Configuration: Designed with a large grey threaded front volute snout to serve as a direct drop-in replacement across popular Reef Octopus skimmers.
Substantial Air Injection: Pushes a consistent 480 Liters per Hour (17 SCFH) of air flow into the reaction chamber to maximize daily organic waste export.
Compact Spatial Profile: A small, streamlined physical footprint allows the pump to seat comfortably within tight, space-constrained space-saver skimmer bases.
Submersible Quiet Dynamics: Features a balanced ceramic shaft and premium magnetic rotor assembly that dampens operating harmonics for whisper-quiet sump setups.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus Aquatrance 1800S Pinwheel Protein Skimmer Pump
The Reef Octopus Aquatrance 1800S Skimmer Pump (SKU: AQ-1800S) is a highly reliable, cost-effective replacement pinwheel pump explicitly engineered to restore peak performance to intermediate generations of Reef Octopus protein skimmers. Over long years of uninterrupted, continuous operation, raw calcium buildup, abrasive carbon fragments, and organic sludge wear down internal magnetic tolerances. This wear leads to louder motor chatter, decreased air extraction, and frequent start-up failures. The Aquatrance 1800S replaces aging or worn pump blocks, introducing a significantly more compact frame that draws minimal power while maintaining an impressive air-to-water fractionation ratio.
Operating on a safe and exceptionally efficient 11-watt architecture, the AQ-1800S is equipped with a high-performance neodymium magnet rotor paired with a factory-balanced pinwheel impeller. As water passes through the front volute chamber, the specialized pinwheel chops air entering the venturi line into a microscopic bubble fog. This massive surface area ensures that dissolved organic compounds attach tightly to the bubbles and lift smoothly into your collection cup. Designed specifically with a large grey threaded discharge outlet snout, this pump links seamlessly to existing factory metric plumbing loops without the need for complicated vinyl tube coupling configurations.
Key Features
Maximized Air-to-Water Blending: Delivers professional-grade waste fractioning performance at an economical price point, enhancing water clarity across your ecosystem.
Resilient Internal Components: Outfitted with a premium wear-resistant ceramic shaft and protective composite end bushings to minimize friction and prevent heat-warping.
Streamlined Footprint Integration: Bypasses unnecessary external casing bulk to give you more breathing room when fitting the pump beside sump partitions.
Cool Running Submersible Drive: Advanced internal motor potting drops operating temperatures, preventing calcium crusts from binding up the impeller core prematurely.
Universal Volute Threading: The coarse threaded discharge snout supports direct union connection rings, enabling instant, tool-free installation loops.
Verified Skimmer Fitment Guidelines
Direct Replacement Fitment: Reef Octopus Prime 150-INT (PRIME-150INT), Reef Octopus eSsence S-130 (OCT-eSsence-S130).
Plumbing Notes: Engineered explicitly for modern Reef Octopus skimmer models featuring a large grey threaded output configuration on the fractionating volute housing.
What’s Included:
(1) Reef Octopus Aquatrance 1800S Skimmer Pump Unit
(1) Direct-Fit Pinwheel Impeller Assembly (Pre-Installed)
(Note: Clear venturi air intake nozzles, silicone air hoses, and volute adapter plates are sold separately)
Technical Specs:
Official Model Name: Aquatrance 1800S Pinwheel Pump
SKU / Part Number: AQ-1800S (Alternate Part Number: CV25004 / RCV25004)
Maximum Volumetric Water Flow Rate: 140 GPH
Maximum Air Induction Intake Rate: 480 L/H (17 SCFH)
Power Consumption Rating: 11 Watts @ 120V / 60Hz
Physical Boundary Dimensions: 4.50 in L x 2.40 in W x 3.60 in H
Output Connection Size: Threaded Metric Snout (Large Grey Configuration)
Manufacturer Warranty Support: 1-Year Limited Warranty Cover Protection
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.
- Disconnect the main power supply line for your existing protein skimmer pump and pull the entire filtration unit completely out of the sump basin.
- Carefully unscrew or slide the old pump block away from the skimmer’s internal structural intake plumbing adapter tree.
- Remove the clear venturi air adapter snout from your old pump intake side and push it firmly into the specialized intake socket on the new AQ-1800S cover.
- Verify your factory plumbing output adapter contains its rubber sealing o-ring, then screw the adapter clockwise onto the large grey threaded pump snout until it is hand-tight.
- Securely press the completed pump assembly back onto the skimmer body line, slide the flexible air muffling tube over the venturi, and lower the skimmer back into position.
- Plug the standard three-prong power connector into a GFCI-protected outlet frame and monitor the air line to confirm a rich bubble line starts forming immediately.
Pro Tips:
- Do Not Overtighten the Volute Snout. When mating your output adapter plumbing onto the grey male threads of the AQ-1800S volute cover, wrap the connection hand-tight only. Never use pliers or heavy plumbing wrenches to crank down on the union. The threads are cut into precision PVC plastic; applying mechanical force will strip the threading grooves or warp the integrated o-ring seat, triggering air leaks that strip velocity from your skimmer's bubble vortex.
- Perform a 3-Month Vinegar Bath. To preserve the premium 1-year factory warranty matrix, make it a habit to lift the pump out of your sump environment every 90 days for an overnight citric acid or white vinegar soak. Saltwater sumps continuously vaporize calcium carbonate, which collects along the spinning pinwheel tracks. Dissolving these mineral sheets keeps the ceramic shaft gliding friction-free, preventing the motor from drawing high amperage and overheating.
- Confirm Your Volute Profile Configuration. The Aquatrance 1800S shares the same compact core motor block dimensions as the 1000S but utilizes a distinct internal magnetic rotor volume and pinwheel architecture to reach its 480 L/H air threshold. If you are retrofitting this pump onto specific tight skimmer models like the eSsence S-130, confirm your factory volute adapter plate transfers over flush or order the model-specific front cover plate replacement from CoralVue concurrently.