Octo BioChurn 120INT Biopellet Reactor
SKU: OCT-BC120I
MSRP: $ 323,39
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Available Through Authorized Retailer
• Effortless nutrient control for a cleaner, algae-free reef without constant media clogging or maintenance.
• Patent-pending churn plate ensures maximum media suspension and bacterial colonization
• Integrated Aquatrance 1200 pump provides efficient flow and churn motion
• 700ml media capacity supports effective filtration for systems up to 200 gallons
• Compact in-sump design with a space-saving 9.8" x 5.7" footprint
• Ideal For: Reef tanks; intermediate hobbyists; high-nutrient systems; space-limited sumps
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Precision Carbon Dosing Without the Chaos.
The BioChurn Reactor INT is engineered for hobbyists who demand total control over solid carbon dosing. Unlike traditional reactors that require excessive, turbulent flow just to keep media moving, our "Churn Style" design fluidizes large volumes of bio-pellets with ease.
Utilizing our patent-pending churn plate, the reactor generates a unique cyclonic motion for superior media suspension. Paired with our Aquatrance recirculation pumps, the integrated independent flow valves allow you to fine-tune media movement without affecting overall throughput. Available in In-Sump, External, and Commercial series, the BioChurn is the definitive solution for managing PO4 and NO3.
Key Features
• Cyclone Churn Technology: Patent-pending plate design ensures pellets remain in a constant state of suspension without needing excessive flow pressure.
• Integrated Aquatrance Pump: Includes a reliable, energy-efficient Aquatrance 1200 pump for both feed and fluidization.
• High-Quality Construction: Built with durable, hand-made acrylic for long-term reliability in marine environments.
• Cascading Output: The design allows for a gentle water return, increasing the surface area for bacterial activity.
• Simplified Maintenance: Features an easy-to-access upper containment plate and sieve to keep media securely inside the chamber.
• Space-Saving Footprint: The compact 5-inch body diameter fits easily into most standard aquarium sumps.
Ideal For
• Mixed reef and SPS-dominant aquariums requiring strict nitrate and phosphate management.
• Intermediate to advanced hobbyists looking for a more efficient alternative to traditional tumbling reactors.
• Systems up to 200 gallons that need a dedicated carbon-dosing solution to combat nuisance algae.
• Hobbyists with limited sump space who require a pump-integrated, "plug-and-play" reactor setup.
• Aquarists using solid carbon sources like BioSpheres or NPX Bioplastics for nutrient reduction.
What's Included:
• BioChurn 120INT Reactor Body
• Aquatrance 1200 Pump
• Internal Churn Plate and Pole
• Upper Containment Plate and Sieve
• Necessary O-Rings and Screws
• Mounting Bracket and Base
Specifications:
• Body Diameter: Ф5 in (120 mm)
• Footprint: 9.8 in x 5.7 in
• Total Height: 14.6 in
• Max Capacity: 700 ml (approximate, depending on media)
• Recommended Tank Size: Up to 200 gal
• Pump Model: Aquatrance AQ-1200
• Power Consumption: 15 Watts
• Max Flow Rate: 340 GPH
• Warranty: 1-year on reactor body; 2-year on pump]
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.
- Inspect the reactor for any shipping damage and ensure all O-rings are properly seated.
- Add your preferred biopellet media (e.g., Reef Octopus BioSpheres) into the reaction chamber, not exceeding the 700ml maximum capacity.
- Secure the upper containment plate and tighten the top screws to prevent media from escaping into the sump.
- Place the reactor in your sump in an area with a stable water level.
- Plug in the Aquatrance 1200 pump and observe the media movement; it should begin a gentle "churning" or cyclone motion.
- Allow several weeks for bacterial colonization to occur before adjusting nutrient export expectations.
Soak your biopellets in aquarium water for 24 hours before use. New biopellets can be buoyant and may initially float or clump. Pre-soaking them ensures they are fully saturated and will begin churning properly the moment you turn on the pump.
Position the reactor output near your protein skimmer intake. Biopellet reactors produce bacterial biomass as a byproduct of nutrient consumption. Placing the reactor output near your skimmer allows the skimmer to efficiently remove this biomass and the exported nutrients from the system.





