Tunze Turbelle® ORCA MK2 White 6105

The white Tunze Turbelle 6105 ORCA combines a stream pump with an ORCA MK2 oscillating drive. Instead of leaving the outlet pointed in one direction, the drive moves the pump through a programmed sweep to distribute circulation across different areas of a reef aquarium.

The Reef Assistant app controls the oscillating movement. Integration with Tunze's app also allows pump strength to vary with the rotation angle, giving more control over how flow reaches rockwork and coral colonies.

Plan clearance for the full moving assembly and its sweep, including room around nearby glass, rock and cables. The 6105 pump offers adjustable circulation, so begin with an appropriate output and observe sand movement and coral response before increasing it. This is an in-tank circulation system; select a dedicated return pump for lifting water from a sump.