Red Sea REEFER Peninsula G3 Aquarium System S-700

• 705 L total system volume – a 568 L display over a 136.7 L sump.
• 19 mm Euro-braced ultra-clear glass – thicker glass and a jet-black top brace plus bottom brace, distinct from the fully rimless construction on the smaller Peninsula 350.
• Reinforced aluminium cabinet structure – an aluminium super-structure under replaceable plywood exterior panels, exclusive to the S-series within the Peninsula G3 range.
• Slide-out control panel – a dedicated bay for controllers and equipment, also exclusive to the S-series.
• ReefGate flow valve and G3 plumbing – 32 mm return pipes and a redesigned, fewer-bends layout.
• ReefATO+ auto top-off – top-off dosing, leak detection and temperature monitoring in one unit.
• Pre-glued sump plumbing – arrives ready to use, no gluing required.

• REEFER Peninsula S-700 G3 Euro-braced display aquarium
• Aluminium-reinforced cabinet with replaceable marine-spec plywood exterior panels
• Glass sump with mechanical filtration compartment and pre-glued plumbing
• ReefGate high-precision flow valve
• Slide-out control panel
• ReefATO+ auto top-off, leak detector and temperature monitor
• 2 x 225-micron filter socks and 2 x media cups

• Lighting – sold separately; see the ReefLED 160S
• Return pump – see the ReefRun G2 6000 DC pump
• Protein skimmer – see the Reefer Skimmer 600 or Reefer Skimmer 900
• Circulation pumps – see the ReefWave 45
• ReefMat automatic filter roller
• Heater, chiller and any temperature controller
• Dosing pump system
• RO/DI unit and saltwater mix – the tank ships dry
• Live rock, sand, aquascape and livestock

This is the Standard tier: aquarium, cabinet and plumbed sump only. Red Sea also sells this tank as a Deluxe package (adding lighting) and a MAX package (adding lighting, pump, skimmer, circulation and filter roller) – check which tier a listing describes before comparing prices, since they're different purchases at different price points.

Allow 165 cm of total system height plus ceiling clearance for lid access. As a peninsula design meant to be walked around, Red Sea's general installation guidance recommends at least 10 cm clearance behind the unit and around 60 cm to one side where it sits near a wall. This is a floor-loading item: expect the full assembled weight well into four figures once filled – Red Sea does not publish a combined empty weight for this model, so get the floor checked by a builder or engineer before it goes in, particularly on an upper floor.

The S-700 is the smaller of the two S-series Peninsula sizes. Both S-700 and S-950 share the 19 mm Euro-braced glass, the aluminium cabinet structure and the slide-out control panel that the 350 and 500 do not have; if you don't need the extra structural spec, the 350 or 500 covers a smaller footprint at a lower price.

Suited to a reefer planning a large SPS or mixed reef display who wants the S-series' reinforced structure and control-panel bay, and is choosing lighting, flow and skimming equipment separately. Not the right fit if you want equipment pre-matched and fitted – look at the Deluxe or MAX package of this same tank instead. Not a first marine tank: at 705 L this carries a substantial cycling, dosing and top-up workload, and none of lighting, flow or skimming equipment is included.

Check the ReefGate valve and downflow after any plumbing disturbance to keep drain flow quiet. Filter socks need regular rinsing or replacement, and the ReefATO+ probe benefits from a monthly wipe to prevent salt-creep misreads. Once lighting and pumps are fitted, they carry their own separate service schedules.

The ReefATO+ unit is mains-powered – run it through an RCD-protected circuit with a drip loop on the cable. Any lighting, pumps or heater you add should be sized and installed per their own manufacturer instructions. Given the size and filled weight of this system, confirm the floor rating before filling it, not after.

Red Sea's REEFER G3 systems carry a 3-year warranty as standard, extendable to 5 years if the system is registered within 90 days of purchase. This is in addition to your consumer guarantee rights under Australian Consumer Law. This is a large, heavy glass item – confirm delivery access and doorway clearance before ordering, and expect an oversized freight or two-person delivery depending on your address.

Does this include lighting, a pump or a skimmer?

No. This is the Standard tier – aquarium, cabinet and plumbed sump only. Deluxe and MAX packages of this same tank add lighting, and lighting plus pump/skimmer/circulation respectively, if you'd rather buy it pre-matched.

What makes the S-series different from the 350 and 500?

The S-series (S-700 and S-950) uses 19 mm Euro-braced glass rather than 15 mm rimless glass, and adds an aluminium-reinforced cabinet structure with a slide-out control panel – features the 350 and 500 don't have.

How heavy is this system filled?

Red Sea has not published a combined empty weight (aquarium plus cabinet, dry) for this model. Get the floor checked by a builder or engineer before filling it, particularly on an upper floor or bearer-and-joist construction.

Does the sump take a ReefMat filter roller?

The sump's mechanical filtration compartment is ReefMat-ready, but the roller itself is sold separately and isn't included with any tier of this tank.

What clearance does Red Sea recommend around the cabinet?

General Red Sea installation guidance calls for at least 10 cm of clearance behind the system for access, and around 60 cm to one side where the peninsula sits close to a wall.