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Red Sea Reefer 250






Red Sea REEFER™ Systems
Rimless Reef Ready Systems for advanced hobbyists

REEFER™ Concept
Red Sea’s REEFER™ series of Reef Systems, provide advanced hobbyists with a solid foundation for building a fully featured reef or marine aquarium.

The REEFER™ series combines a contemporary, rimless, ultra-clear glass aquarium with a stylish cabinet and a comprehensive water management system, including a professional sump with integrated automatic top-up, and Red Sea’s unique silent down-flow system.

Incorporating technologies originally developed for Red Sea’s all-in-one MAX® coral reef systems, the REEFER™ series is designed for ease of operation while enabling the advanced hobbyist to install an unlimited choice of lighting, filtration, circulation and controllers to create a uniquely customized system.

Features of the Red Sea REEFER™ include:
  • Rimless, ultra-clear, beveled edge glass aquarium
  • Elegant marine-spec cabinet
  • Professional sump with constant height skimmer chamber and micron filter bags
  • Silent, regulated down-flow system with emergency overflow
  • Integrated automatic top-up system with reservoir
  • Assembly-ready piping – no gluing required
REEFER™ Specification
REEFER™ aquariums are constructed from thick, beveled-edge, ultra-clear glass to support their elegant and modern rimless design.

The aquarium sits on a recessed base that “floats” it above the cabinet, which seamlessly follows the contour of the glass.

The marine-spec laminated cabinet that houses the sump, (and in the larger models also includes a dedicated, vented space for chillers) is smartly finished with weatherproof, epoxy-painted doors.

REEFER™ Water Management System
The comprehensive water management system provides the base for excellent water quality. Surface water from all sides of the aquarium is actively fed to the sump through the regulated silent flow downpipe.

red sea reefer marine aquarium system - regulated downflow system

Removable surface-skimming combs surround the top of the centrally located overflow box that houses the downpipe, sump return pipe and the discreet multi-directional “eyeball” return outlet nozzle.

In the event of a blockage in the regulated downpipe, an additional emergency overflow pipe provides an unrestricted free flow of aquarium water directly to the sump.

On entering the sump the water passes through a 200 micron mechanical filter bag, before entering the filtration compartment that maintains a constant water height, making it suitable for all skimmers and other reactors.

In order to remove any air bubbles that may have escaped from the skimmer, the water passes through a bubble-stripping cascade on its way to the return pump chamber.

To ensure a constant water level in the pump compartment, all REEFER™ sumps include an integrated automatic freshwater top-up unit, guaranteeing a constant, stable water flow throughout the complete system.

Supplied as a complete self-assembly kit, all pipe work is ready without the need for any gluing.

REEFER Model Specification






Ultra clear front and side glass
Ultra clear front glass thickness (mm) 8 (3/10") 10 (3/8") 12 (1/2") 12 (1/2") 15 (5/8")
Built in surface skimmer
Integrated automatic top up system
Display tank water volume (L) 77 (21 gal) 130 (34 gal) 204 (54 gal) 275 (73 gal) 350 (92 gal)
In cabinet sump water volume (L) 28 (7 gal) 35 (9 gal) 40 (11 gal) 70 (18 gal) 90 (24 gal)
Total system water volume (L) 105 (28 gal) 165 (43 gal) 244 (65 gal) 345 (91 gal) 440 (116 gal)
RO reservoir volume (L) 4.5 (1.2 gal) 5.4 (1.5 gal) 8 (2.1 gal) 10.5 (2.8 gal) 13.7 (3.6 gal)
Display tank length (cm) 45 (18") 60 (24.5") 90 (35.5") 120 (47") 150 (59")
Display tank height (cm) 45 (18") 50 (20") 53 (21") 53 (21") 55 (22")
Display tank width (cm) 45 (18") 50 (20") 50 (20") 50 (20") 50 (20")
Total system height with cabinet (cm) 132 (52") 137 (54") 140 (55") 140 (55") 142 (56")
Sump Water height (cm) 20 (8") 20 (8") 20 (8") 24 (9.4") 24 (9.4")
Sump Skimmer chamber Dimensions (cm) 24 x 21 (9.4" x 8.3") 30 x 25 (11.8" x 9.8") 35 x 25 (13.8" x 9.8") 42 x 34 (16.5" x 13.4") 42 x 48 (16.5" x 19")
Sump Pump chamber Dimensions (cm) 24 x 12 (9.4" x 4.7") 30 x 12 (11.8" x 4.7") 35 x 12 (13.8" x 4.7) 42 x 15 (16.5" x 6") 42 x 15 (16.5" x 6")
Recommended Return Pump flow (lph) (pump not included) 2000 (530 gph) 2000 (530 gph) 2500 (660 gph) 3000 (790 gph) 4000 (1060 gph)
3/4" threaded hose barb (inner dia.) 16mm (5/8") 16mm (5/8") 16mm (5/8") 16mm (5/8") 25mm (1")



*The max size box we offer is 10" x 10" x 10". If your corals/fish do not fit in this size box, we will charge an additional shipping fee per additional box.

We ship using UPS Next Day Air from Monday through Thursday for next day arrival. We do not offer Saturday delivery at this time. We do not ship orders the same day they are ordered. Once we ship your order, you will receive a tracking number. If you do not receive a tracking number by 2:30 PM PST, (5:30 PM EST) expect your package to be sent the following day.

Depending on the type of coral, some may need to be fragged before shipping out. Your order may be delayed to ensure the health of the livestock. If you need an exact date, please email us at

We are not responsible for tracking your package or any questions you may have with UPS. 100% of the time they tell us to have the customer contact them instead. We are NOT responsible for weather delays, mechanical delays or missed delivery. You must contact UPS directly to resolve any of these issues.


DOA's are rare, but in the event that a DOA occurs please email us either several photos at different angles or a short video showing the specimen in the bag. Please do this within 2 hours of the UPS delivery to get store credit for your DOA item. If any photo/video is sent beyond the time frame store credit WILL NOT be issued. No exceptions. Email any DOA's to

We are not responsible for weather delays or missed deliveries for any reason. PLEASE BE AWARE OF YOUR PACKAGE ARRIVAL. We will NOT issue a refund on shipping charges under any circumstance.

Corals and fish need time to acclimate to their new environment. It is not uncommon for livestock to "act" abnormal when being introduced to a new system. If you feel that the fish/coral is in a questionable condition and may die the same day, please email us within the 2 hour delivery window. We will review your claim and have a decision on eligibility for store credit within 2 business days. 




**In the event that we cannot supply you the fish/coral you ordered and you need to cancel, restocking fee is waived.

**There may be a 7 day grace period before we can supply you a certain fish/coral. After the 7 day grace period, cancellation fee will be waived.

When you purchase from our store, you agree to not make a dispute or chargeback under any circumstance. We will resolve any issues that you may have. 

Please note that we are not responsible for:

1.     Your water parameters are not up to par and your fish dies. 

2.     Fish loss due to improper care. 

3.     Anything that is beyond our control.