Biopellets export nutrients through solid carbon dosing, but they're not the only biological approach — some reef keepers prefer fueling bacteria directly in a dedicated in-sump chamber. The Reef Octopus BioReact 150 Space Saver Reactor is built specifically to control phosphate and nitrate that way.
How BioReact Controls Nutrients
The BioReact chamber fuels beneficial bacteria that consume phosphate (PO4) and nitrate (NO3) directly, offering an alternative or complementary nutrient-export pathway to biopellets — useful for reef keepers who want a second nutrient-control method alongside skimming.
What It Offers
- Dedicated PO4/NO3 control through a fueled bacterial process rather than biopellet-based solid carbon dosing.
- Space Saver in-sump body that fits narrower compartments.
- Built-in VarioS2 pump, keeping the unit self-contained without a separate feed pump.
Setup Tips
- Introduce gradually and monitor nitrate and phosphate response before increasing dosing or flow.
- Pair with regular water testing to track how the reactor is affecting your nutrient levels over time.
- Consider alongside, not instead of, skimming — BioReact complements rather than replaces core filtration.
The Reef Octopus BioReact 150 Space Saver Reactor is available at Marine Concept Supply — order online or pick up at our shop in Wheeling, IL. Shop BioReact 150, and browse more reactors.
