Neptune Systems DDR Dual Reservoir

The Neptune Systems DDR Dual Reservoir is a purpose-built fluid containment system designed to work directly with the DOS dosing system. Constructed from strong cast acrylic, the DDR holds 2 liters of fluid on each side — perfect for storing two-part alkalinity and calcium solutions, or any other dosing additives — and connects directly to your DOS for a clean, organized setup.

Built-in optical sensors communicate fluid levels directly to your Apex controller, so you'll always get an alert before you run out. Low-profile design, push-fit tubing connections, and easy top-fill access make the DDR as practical as it is attractive.

Key Features:

• 2 liters per side (4 liters total capacity)
• Connects directly to the DOS dosing system
• Optical sensors alert your Apex when levels are low
• Strong cast-acrylic construction
• Low-profile design — stable and won't tip
• Push-fit tubing connections for easy setup
• Easy top-fill access for quick refills
• Compatible with 2-part, alkalinity, calcium, and other additives