Neptune Systems DOS Dual Reservoir

The Neptune Systems DOS Dual Reservoir (DDR) is a dual‑chamber fluid container built for use with the Neptune DŌS dosing system. Each chamber holds up to 2 litres (4 L total), providing ample storage for two-part additives (e.g. calcium and alkalinity) or other liquid supplements and making it possible to dose a reef tank for weeks before refilling. The reservoir uses optical level sensors to detect low fluid levels and integrate directly with a compatible controller (e.g. an Apex) — letting you monitor refill status via the controller’s dashboard and receive low‑fluid warnings automatically. Its low‑profile, low‑centre‑of‑gravity design helps prevent tipping, while removable lids and push‑fit tubing connections make refilling and plumbing straightforward.