Some reef keepers want more independent control over reactor flow and pump behavior than a bracket-mounted BioChurn provides. The Reef Octopus BioChurn 120 line steps up to a larger in-sump body and a professional recirculating model for exactly that kind of control.
Choosing a Configuration
- BioChurn 120INT — the larger in-sump body in the BioChurn line, using the same patent-pending churn plate to keep pellets evenly fluidized at higher media volumes.
- BioChurn 120R Recirculating — the professional recirculating model for hobbyists who want independent control over flow through the reactor, separate from the rest of their sump's plumbing.
Why Recirculating Adds Control
A recirculating reactor draws and returns water through its own dedicated loop rather than depending on ambient sump flow, giving you independent control over exactly how much water passes through the churn plate — useful for fine-tuning media tumbling without affecting the rest of your sump's circulation.
Setup Tips
- Start with a conservative pellet charge and watch for consistent, even churn.
- Use the recirculating model's independent flow control to fine-tune tumbling without disturbing overall sump circulation.
- Monitor nitrate and phosphate as you dial in the reactor for your specific bioload.
The Reef Octopus BioChurn 120 line is available at Marine Concept Supply — order online or pick up at our shop in Wheeling, IL. Shop BioChurn 120INT or 120R Recirculating, and browse more reactors.
