Reef Octo Bio Reactor

The BioReact In-Sump Bio Reactor is engineered for hobbyists who demand efficient nutrient control and crystal-clear water. Designed to accelerate the growth of beneficial bacteria, this high-performance bio reactor helps maintain stable Phosphate (PO4) and Nitrate (NO3) levels, supporting a healthier and more balanced marine aquarium.

Optimised for performance and ease of use, the BioReact is powered by our reliable and energy-efficient Aquatrance pump, delivering quiet operation and consistent flow. With full flow control, you can precisely regulate media movement for maximum biological efficiency.

Its compact, space-saving footprint makes it ideal for modern sump systems where every inch counts — giving you more room for additional filtration equipment.

Engineered for Reliability & Ease of Maintenance

Constructed from high-quality cast acrylic, the BioReact is built for long-term durability in marine environments.

Key design innovations include:

• Specially designed bottom water inlet chamber – Prevents media from entering the pump during power outages

• Rigid sieve plate top cover – Stops pellets from escaping through the outlet connection

• No central pipe design – Makes refilling media simple and hassle-free

• 4-direction adjustable cover – Allows flexible installation to suit your sump layout

• Energy-efficient & quiet Aquatrance pump

• Compact footprint for space-saving installation

This thoughtful design ensures smooth operation, easy maintenance, and dependable nutrient control.

Recommended Media: Bio-Spheres

For optimal results, we highly recommend pairing the BioReact with our Bio-Spheres biological media.

Bio-Spheres are specially encapsulated pellets made from 100% pure biological polymer solid carbon. When used in a bio reactor system, they gradually release polymer carbon into the marine water, promoting the growth of beneficial bacteria and enzymes on the pellet surface.

How Bio-Spheres Work:

• Provide a continuous food source for beneficial bacteria

• Encourage bacterial reproduction

• Support the natural reduction of nitrates and phosphates

• Improve overall water clarity and stability

This biological process enhances nutrient export while maintaining a balanced reef ecosystem.

Available Models & Specifications

BioReact 90

• Pump Power: 7W

• Footprint: 120mm x 100mm

• Height: 390mm

• Recommended Tank Volume: Up to 400L (106 US Gallons)

Ideal for small to medium marine aquariums requiring efficient nutrient management.

BioReact 120

• Pump Power: 15W

• Footprint: 140mm x 130mm

• Height: 390mm

• Recommended Tank Volume: Up to 700L (185 US Gallons)

Perfect for larger reef systems needing enhanced biological filtration and nutrient control.

Why Choose the BioReact Bio Pellet Reactor?

If you're looking for a high-performance bio pellet reactor for reef aquariums, the BioReact delivers powerful nutrient reduction, reliable operation, and easy maintenance — all in a compact footprint. Combined with Bio-Spheres media, it provides a complete solution for maintaining low nitrate and phosphate levels while supporting a thriving marine environment.

Upgrade your filtration system today with the BioReact In-Sump Bio Reactor for clearer, healthier aquarium water.