Red Sea REEFER G3 DELUXE Aquarium System 250

• 245 L total, on an 89.9 × 50.0 cm footprint – a 203 L rimless display over a 42 L sump.
• 2 × ReefLED G2 115 fixtures and mounting arms included – 115 W each, roughly 500 PAR at the surface falling to around 150 PAR at 50 cm, tunable white spectrum, rated to 60 cm maximum water depth – sized to cover the full 89.9 cm span between them.
• ReefATO+ built in – automatic top-off with a titanium water-level sensor, integrated thermometer and leak detection, standard on every G3 model.
• Redesigned G3 sump – REEF-SPEC, ReefMat-ready, with a dedicated skimmer chamber and a bubble-trap labyrinth ahead of the pump draw.
• Rimless, ultra-clear glass – beveled-edge front panel along the full 89.9 cm length.
• Pre-glued sump plumbing – the downpipe, return line and ReefGate flow valve arrive assembled.

• REEFER G3 250 rimless display aquarium
• Marine-spec cabinet in your choice of black or white
• REEF-SPEC glass sump with pre-glued plumbing and ReefGate flow valve
• 2 × ReefLED G2 115 LED fixtures with mounting arms
• ReefATO+ automatic top-off system, with water-level sensor, thermometer and leak detector
• Mechanical filtration media (filter socks and media cups)

Not included: return pump, protein skimmer, heater, the ReefMat fleece filter itself (the sump is only pre-fitted to accept one), any additional controller hub, and aquascaping rock, sand or livestock.

Floor loading: at approximately 380 kg filled with water alone – before aquascaping rock, sand or livestock – this is a load-bearing consideration on any floor above ground level. Add your own estimated rock and sand weight on top of this figure, and have a qualified professional confirm the floor can carry it before installation.

All four current REEFER G3 sizes share the same sump architecture, ReefGate valve and ReefATO+ system – the differences are footprint, volume, and how many ReefLED G2 115 fixtures the Deluxe package includes.

Against the 200, the 250 is 30 cm longer for 45 L more total volume – pick the 250 when you have the wall length and want a wider aquascape rather than more depth. Against the 300, the 250 shares the same 89.9 cm length but is 7.4 cm narrower and has a smaller sump; the 300 is the pick if you can spare the extra depth and want the larger sump for stocking headroom.

Suitable for: a reefer with 90 cm or more of usable wall length who wants a wide aquascaping canvas and two lights covering it from the start, without moving up to the deeper 300.

Not suitable for: an install on an unconfirmed suspended floor – check the load rating first – or anyone expecting a plug-and-play kit; a return pump and, if wanted, a skimmer or ReefMat are still separate purchases.

Rinse or replace the sump's micron filter socks weekly, more often while cycling. Keep both ReefLED fan intakes free of salt dust. Wipe the ReefATO+ sensor periodically to prevent salt creep causing false top-off readings.

Run both ReefLED fixtures, the ATO pump and any added equipment on 240 V AU-approved supplies with an RCD, with mains connections above the water line and a drip loop. See the floor-loading note above before installing.

• Red Sea ReefRun G2 6000 DC Pump or Red Sea ReefRun G2 8000 DC Pump – return pump options for a 250-class sump.
• Red Sea Reefer DC Skimmer 600 – sized for the 250's skimmer chamber and bioload.
• Red Sea ReefMat Filter 250 – drops into the ReefMat-ready sump chamber.
• Red Sea ReefLED 90/G2 115 Universal Mounting Arm – for a third fixture if you want tighter PAR uniformity across the full length.
• Red Sea Coral Pro Salt, 20 kg refill – for the initial fill and ongoing water changes on a 245 L system.
• Red Sea Seawater Refractometer – check salinity before any new mix goes in.

Red Sea covers the aquarium and cabinet for 36 months from purchase, extendable to 5 years total at no cost if you register within 90 days – Australia is an eligible market. The extension covers the structural integrity of the glass and cabinet only; the ReefLED fixtures and ReefATO+ carry their own 24-month manufacturer warranty. These terms sit in addition to your rights under the Australian Consumer Law, which are not limited or excluded by them. As a large glass and cabinet item, this ships as a freight delivery – confirm access and unloading arrangements with us before ordering.

How much does the filled system weigh, and is that a floor-loading concern?

Approximately 380 kg with water alone, before rock, sand or livestock. On a suspended or upper floor, get the load confirmed by a qualified professional before installing.

Does the REEFER G3 Deluxe 250 include a return pump?

No. A ReefRun G2 6000 or 8000 DC pump, sold separately, suits this sump size.

Why two lights instead of one?

At 89.9 cm long, a single ReefLED G2 115 can't hold even PAR across the full display – two fixtures, spaced along the mounting arms, is how Red Sea covers this footprint in the Deluxe package.

Is the auto top-off included?

Yes. ReefATO+ ships standard on every REEFER G3 model, including this one. You'll still need your own top-up water reservoir.

Should I choose the 250 or the 300?

Both are 89.9 cm long. The 300 is 7.4 cm deeper, with a 15 L larger sump and 56 L more total volume – choose it if you can spare the depth and want the extra filtration headroom; otherwise the 250 is the lighter, less expensive option on the same footprint length.