

ReefCans 18 – Red Sea
The ReefCans – Red Sea – utilize the most unused dimension in your system’s cabinet, which is height, resulting in more RO water for less valuable floor space.
70,14 €
In stock (can be backordered)
In stock (can be backordered)
Payment Methods:
Description
ReefCans 18 - Red Sea
More RO water for less floor space
The ReefCan 18 is an auto top-off (ATO) reservoir designed to store purified water (RO/DI) and feed it into a marine or reef aquarium system to compensate for evaporation. It’s a more compact version of the ReefCan series (compared to the ReefCan 40), optimized for systems with more limited space or lower top-off volume needs.
Instead of using a wide “bucket” style container, ReefCan 18 takes advantage of vertical space. Its tall, narrow shape allows it to hold significant water volume while occupying minimal floor area.

Elegant.
The ReefCans utilize the most unused dimension in your system’s cabinet, which is height, resulting in more RO water for less valuable floor space.
The ReefCans can fit in the gap beside your sump. Even in Red Sea´s Reefer 170 & 200 models and can easily connected to any ATO systems.
It can probably slide in nicelybehind your cabinet as well.
Specifications
Volume / Capacity: Holds 18 liters (about 4.8 US gallons) of RO/DI water.
Dimensions: It measures 22 inches (≈ 55 cm) tall, 3.5 inches (≈ 9 cm) wide, and 17 inches (≈ 44 cm) deep.
Pump / Opening Size: The rear opening (for the ATO pump, tubing, and cables) accommodates pumps up to 2.3 inches (≈ 5.8 cm) in diameter.
Transparent Body & Water Scale: The reservoir is made of clear plastic, with an embedded scale that allows you to visually monitor how much water remains without opening it.
Front & Rear Openings: There is a front lid for easy refill access, and a rear access opening for routing ATO pump tubing and cables without needing to disconnect them.
ReefATO+ Compatibility: The design is made to accommodate Red Sea’s ReefATO+ siphon breaker / system. The capping and openings are set so that once the cables and plumbing are installed, you typically don't have to disconnect them again (except for pump maintenance).

Practical.
The ReefCans have a transparent plastic body with an embedded water scale, so you can see exactly how much water you have left.
Function
In typical use, ReefCan 18 can top off an average 200-liter tank for about one week, given normal evaporation levels.
Because of its slender profile, it can often fit in narrow gaps beside a sump or slide behind/alongside a cabinet with minimal footprint impact.
The dual-opening design allows refilling without removing or disconnecting plumbing, making routine maintenance easier.

Convenient.
The front opening is positioned so you can easily fill up the reservoir without moving it.
In addition, you will no longer need to fiddle with any tubes or cables, as there is a second opening at the rear just for this.

While suitable for most ATO systems, the ReefCan is specifically designed to hold the ReefATO+ syphon breaker.
Once you set up the cables, you won’t need to disconnect them except for an occasional pump maintenance.
Compatibility
The ReefCan 18 is compatible with many Red Sea REEFER (G2/G2+) systems, especially the smaller ones (e.g. REEFER 170, 200, 250) where the larger ReefCan 40 might not physically fit or be specified.
Because it is narrower, its horizontal footprint is much smaller, but depth clearance should still be checked to ensure it does not collide with other equipment or plumbing behind the reservoir.
The pump opening size (2.3" / 5.8 cm) must be considered: ensure your ATO pump and tubing can physically pass through or fit the back opening.
While sufficient for moderate evaporation loads, in very large tanks, or in setups with high evaporation, the 18 L reservoir may require more frequent refills or might be borderline under-sized; in those cases, the 40 L version may be better suited.
Specification
Technical Specifications
| Shipping Package Weight (Est.) | 0,8 kg |
|---|---|
| Volume | 18l |
| Dimensions (L, W, H) | 44 x 9 x 55 (cm) |
Customer Reviews
Only logged in customers who have purchased this product may leave a review.
Related Products
DOWSIL 881 High Strength Glass Silicone Sealant (Transparent) – DOW
Available on backorder

Salt
Fish Food
Coral Nutrition
Water Conditioners & Bacteria
Trace Elements & Supplements
Fishes
Invertebrates
SPS Corals
LPS Corals
Soft Corals
Protein Skimmers
Fleece Filters
Internal & Canister Filters
HOB (Hang-on-Back) Filters
Sump Filters & Overflows
Reverse Osmosis – RO
Sterilizers
Filter Media
LED Lighting
LED Sump Lighting
Smart LED Lighting Control
Accesories & Components
Wave Makers & Powerheads
Return Pumps
Dosing Pumps
Air Pumps & Aeration
Accesories & Connecters
Algae Reactors
BioPellet Reactors
Calcium Reactors
Zeolite Reactors
Kalkwasser Reactors
CO2 Systems
Filtration Media
Filter Accesories
Chillers
Controllers
Fan Chillers
Heaters
Thermometers
Automation & Control
Auto Top-Off (ATO)
Water Tests
Live Rock
Rocks & Stones
Gravel & Substrate
Maintenance Accesories
Custom Aquariums
Waterbox Aquariums


Reviews
Clear filtersThere are no reviews yet.