An elegant and highly refined solution to two-part/liquid storage, the DOS Dual Reservoir's advanced features are Apex Ready!



Large Storage Capacity - Each vessel holds up to 2 liters of fluid for a total storage volume of 4 liters
Connects directly to your DOS dosing system
Engineered with a low center of gravity to help avoid tips and spills
Optical sensors provide real-time fluid levels to the Apex Fusion dashboard
Easily removable lids to make refills a breeze
Built using cast acrylic
Push-fit tubing connections


Dimensions (approx) - 10.5" x 8.5" x 5.5"
Capacity - 2000ml per side (0.52 gallons)
Apex, Apex Lite, or Apex Jr. and DOS dosing system required to operate level sensors

What's in the Box?

DDR with sensors and cable
4 meters of tubing
Getting Started Guide

Neptune Systems DOS DDR Dual Reservoir