• Rimless, low-iron glass display aquarium with bevelled edges
• Self-assembly cabinet with doors, 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 — a clean sightline without the green tint of standard glass: front 10 mm, sides 12 mm, base 10 mm.
• 165 L total system volume — 128 L in the display and 37 L in the sump, for real working water volume and more stability than the display volume alone suggests.
• 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.
• Shared accessory range — media baskets, the ReefMat roller and RSK dosing gear are common across the 170–300 G2+ sizes.
• Compact 60 x 50 cm footprint — suits a spare corner, an office or a first stand-alone reef tank.

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 Nano 170 is the smallest footprint in the G2+ range and the lightest to move into position — pick it for a first dedicated reef tank, a spare bedroom or office, or anywhere 60 x 50 cm is genuinely the largest footprint you have. Step up to the 200 or 250 for more aquascaping depth and a more forgiving nutrient load once you're stocking heavily.

Suitable for: saltwater and reef keeping, a first stand-alone reef tank, aquarists who want Red Sea's sump and ATO engineering without the full MAX package, spaces with a strict floor footprint.

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 Nano 170 weighs approximately 180 kg (400 lb) — well within a standard timber or concrete domestic floor, but check with a builder before siting it on an upper storey or over a long unsupported span, as you would for any large aquarium.

• 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 170 L — the sump's skimmer chamber is pre-plumbed to accept one.
• A Red Sea ReefLED or equivalent fixture — sized to a 60 cm span.
• Red Sea Coral Pro Salt or Reef Foundation — for your first fill and ongoing top-ups.
• A heater sized to 165 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 Nano 170 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 Nano 170 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.

What's the difference between the Reefer G2+ and the Reefer MAX?

The G2+ is the tank-and-sump foundation only. The Reefer MAX range is built on a similar tank but adds a factory-fitted return pump, protein skimmer and lighting, at a higher price. Choose G2+ if you want to select your own equipment; choose MAX if you want it done for you.

Can I run the Nano 170 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.

How much clearance does the sump need for maintenance?

Red Sea recommends at least 10 cm behind the cabinet and around 60 cm of clear access on one side, to reach the sump, ATO reservoir and plumbing.

Does the Nano 170 take the same accessories as the 200, 250 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.