Red Sea REEFER 900 G2+ Versatile, Rimless, Sumped Reef System

Red Sea

  • $ 5,899.00
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Red Sea REEFER 900 G2+


The REEFER™ 900 allows you to take reefscaping to another dimension. The 3XL 900 is 65cm (25.6″) high & wide, and 200cm (79″) long with a 900 liter (240 gal) capacity. This unit introduces an enlarged overflow box with dual side-facing return pump outlets that provides ideal water circulation in the tanks with flows of up to 10,000 lph/2600gph.

A unique feature of the 3XL 900 is a split sump system that provides unsurpassed flexibility. The main sump is set for the main filtration functions with an optional refugium chamber and a dedicated adjustable height skimmer chamber. The sump extension (60 liters/16 gal) can be connected to the main sump and used for additional filtration, as a larger refugium, or even as a dedicated frag tank. Alternatively, it can be set up as an independent unit and used as a full-size (83 liters/22 gal) RO reservoir or saltwater reservoir for automated water changes.

REEFER 900 – What’s included:

  • Rimless, 19mm / ¾” super-clear, beveled edge glass aquarium
  • Elegant, reinforced plywood Marine-Spec cabinet with aluminum support
  • Dual side-facing return pump outlets with fittings for one or two pumps
  • Enlarged overflow box for increased surface skimming
  • Unique split sump system for unsurpassed flexibility:
  • Professional refugium-ready main sump with variable height skimmer chamber and micron filter bags and media cups
  • Extension sump (60 liters/ 16 gal) can be used as a dedicated frag-tank or refugium. Alternatively, it can be disconnected and used as an independent reservoir of 83 liters / 22 gal.
  • 4 units of ReefLED 90 lighting with bespoke mounts (Deluxe models only)
  • All REEFER G2+ models come with the state-of-the-art ReefATO+, which keeps your water volume and salinity stable, and includes an accurate temperature monitor as well as a highly sensitive leak detector. *Reservoir not included.
  • Assembly-ready piping – no gluing required


The REEFER G2+ systems incorporate the following great new features:

  • ReefMat® ready sump that has a pull-out filter-sock/media-cup compartment and a universal connector on the downpipe, for a truly Plug & Play ReefMat installation.
  • The ultra-clear, beveled-edge glass has an increased thickness of up to 0.75" or 19mm with silicone protection strips on the bottom & side joins.
  • The marine-spec cabinets are extra fortified with all models being made from plywood. All REEFER 625 and above have a "Floating tank" feature supported by an aluminum edge.
  • All systems come with a standard 3-year warranty plus highly affordable 4th & 5th year extended warranty plans.
  • All REEFER 350 and above (47" or 120cm and longer) now have dual return outlets, creating even better water distribution.
  • All models include a new and improved high precision valve and an enlarged inlet section on the downflow pipe that enables easy regulation and near-silent operation.
  • Extra connectors that support both metric and USA standard pipes are available for those who wish to customize their sump piping.