Neptune Systems 4 Metre Tubing for DOS

Key Specifications:

Length: 4 meters (the standard length included with a new DOS unit).
Dimensions: 6mm Outer Diameter (OD) / 4mm Inner Diameter (ID).
Availability and Pricing in Australia:

Why you might need additional tubing:

To replace old or worn-out tubing.
To extend the distance between your DOS pump and your dosing reservoirs or your aquarium.