Tunze Overflow Box

Tunze Overflow Box

The Tunze Overflow Box is designed to provide efficient overflow filtration for aquariums without the need for drilled glass. Ideal for retrofit installations, it enables safe transfer of water from the aquarium to a sump filtration system using both surface and bottom suction. Its automatic restart capability ensures reliable operation even after temporary pump interruptions, making it a dependable solution for marine and freshwater aquariums.

Key Features

• Overflow system for aquariums without drilled glass
• Surface and bottom water suction for effective overflow
• Automatic restart after pump interruption
• Quiet operation when installed with recommended hose set
• Suitable for marine and freshwater sump filtration systems

Specifications

• Maximum flow rate: approx. 1,200 L/h
• Up to approx. 1,500 L/h with optional U pipe accessory (1001.74)
• Outlet diameter: approx. 40 mm (1.57")
• No drilling required for installation

Installation Note

• For optimal performance and quieter operation, the Tunze overflow hose set 1075/2 is recommended