Red Sea ReefCan Auto Top Off Reservoir (10.6 Gal / 40L)

In-store pickup only.

The Red Sea ReefCan 40L is a large-capacity vertical water reservoir designed for RO/DI top-off storage in reef systems. With a 10.6 gallon capacity and an embedded water-level scale, it provides extended top-off coverage for medium and large reef tanks without dominating your cabinet.

Built to work seamlessly with the Red Sea ReefATO+ auto top-off system, the ReefCan 40L features front and rear openings for clean routing of tubes and cables, letting it sit flush in most sumps or cabinets.

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• Space-saving vertical design — tucks into unused cabinet space
• 10.6 gallon (40L) capacity for RO/DI top-off water
• Durable transparent body with embedded water-level scale
• Front and rear openings for easy tube and cable routing
• Purpose-built to pair with the Red Sea ReefATO+ system
• Secure twin cap design for quick filling and maintenance
• Suitable for saltwater and freshwater aquariums

Does the ReefCan 40L include an ATO pump?
No. The ReefCan is a reservoir only — it is designed to pair with the Red Sea ReefATO+ auto top-off system (sold separately).

What size tank is this best suited for?
With 10.6 gallons of top-off capacity, the ReefCan 40L is well-suited for medium to large reef systems, providing extended coverage between refills.

What are the front and rear openings for?
They allow clean routing of ATO tubing and sensor cables, so the reservoir sits flush against cabinet walls.