Red Sea Reefer G2+ 250 Complete System black - 250L

• Rimless, low-iron glass display aquarium with bevelled edges
• Self-assembly cabinet with doors, in black, adjustable levelling feet and stainless steel hinges
• In-cabinet glass sump with a mechanical filtration compartment, bubble trap and micron filter socks
• Adjustable-height internal overflow with a silent standpipe and surface skimmer box
• ReefATO+ automatic top-off: reservoir, float sensor and low-voltage dosing pump
• Internal plumbing with outlet nozzle and bulkhead fittings

• Return pump
• Protein skimmer
• Lighting fixture or mounting arm
• ReefMat/NanoMat automatic filter roller
• Live rock, substrate and livestock

Every item on that second list is sold separately – see Goes well with, below. If you want a Reefer with the skimmer, pump and lighting already fitted, the Reefer MAX range bundles them in; this G2+ is the tank-and-sump foundation only.

• Rimless, low-iron glass, 12 mm throughout – front, sides and base, for a clean sightline and the strength a 90 cm span needs.
• 245 L total system volume – 203 L in the display and 42 L in the sump, a genuine step up in working water volume from the 200.
• 90 cm display length – room to aquascape in zones rather than a single feature piece, without moving to the heavier 300.
• ReefATO+ auto top-off included – on many competing systems this is an extra purchase; here it ships fitted.
• Silent internal overflow – a Red Sea-designed standpipe engineered to run quiet rather than gurgle.
• Matt black cabinet finish – sits flush against a dark wall or media unit without drawing the eye to the stand.

All four sizes share the same build, the same ReefATO+ top-off and the same sump architecture – the difference is footprint and working water volume.

The 250 is the entry point into the 90 cm-length half of the range – choose it over the 200 once you have the wall run to spare and want display volume for aquascaping rather than just a taller tank. Choose the 300 instead if you also have the extra 7.5 cm of depth and want the largest sump in the G2+ line.

Suitable for: saltwater and reef keeping, aquascape-led builds needing a 90 cm run, aquarists who want Red Sea's sump and ATO engineering without the full MAX package, upgraders moving on from a 200 or smaller tank.

Not suitable for: running the day it arrives – you'll need at minimum a return pump, heater and lighting before it can be filled and cycled. Freshwater use is fine mechanically, but the sump and ATO are designed around saltwater evaporation rates.

Red Sea's installation guidance asks for at least 10 cm of clearance behind the cabinet for plumbing and cabling, and around 60 cm of clear access down one side for maintenance. The cabinet top sits at approximately 86 cm from the floor. Filled and running, the 250 weighs approximately 315 kg (695 lb) – over 200 L total volume, so check the floor structure with a builder before siting it, particularly on an upper storey, over a long unsupported span, or on anything other than a solid ground-floor slab.

• A return pump sized to the plumbing – the sump and overflow are engineered for a mid-size DC return; check hose and bulkhead size before buying.
• A protein skimmer rated up to 250 L – the sump's skimmer chamber is pre-plumbed to accept one.
• A pair of Red Sea ReefLED fixtures or a single wide-spread unit – to properly cover a 90 cm run.
• Red Sea Coral Pro Salt or Reef Foundation – for your first fill and ongoing top-ups.
• A heater sized to 245 L of total system volume – against your room's typical ambient.

Red Sea's manufacturer warranty on the Reefer G2+ tank and cabinet applies in addition to your rights under Australian Consumer Law, which are not affected by any manufacturer warranty term or exclusion. Register your system with Red Sea after purchase and keep your invoice as proof of purchase. As a large glass-and-cabinet system, the 250 ships on a pallet by oversize freight rather than standard parcel courier – check the freight estimate at checkout, and contact us before ordering if you need help arranging trade or elevator access.

Does the REEFER 250 G2+ come with a return pump?

No. The tank, cabinet, sump and ReefATO+ top-off are included; a return pump, protein skimmer and lighting are sold separately and sized to your setup.

Will one light fixture cover the full 90 cm length?

A single fixture rated for around 90–100 cm coverage will usually reach edge to edge at typical mounting height, but many aquascapers run two smaller fixtures on the 250 for more even spread and easier shading control over reef and mid-tank zones separately.

Does my floor need reinforcing for a 315 kg tank?

Most ground-floor slabs and well-supported timber floors handle it without extra work, but any system over 200 L total volume is worth checking with a builder first, especially upstairs or over a long unsupported span – get that confirmed before delivery, not after.

Can I run the 250 as a freshwater planted tank instead of a reef?

Yes – the tank, cabinet and sump work equally well in freshwater. The ReefATO+ top-off and sump plumbing are designed around saltwater evaporation and filtration but function fine in freshwater use.

Does the 250 take the same accessories as the 170, 200 and 300?

Most Red Sea Reefer G2+ accessories – media baskets, the ReefMat roller, ReefWave pumps and RSK dosing gear – are shared across the range, but always check the fitment note on the accessory's own product page before ordering.