Red Sea Max Nano G2 Aquarium Only

The Red Sea Max Nano G2 Aquarium Only is a premium 75 litre / 19.8 gallon all-in-one nano reef aquarium system designed for hobbyists who want Red Sea’s compact MAX NANO G2 reef platform without the matching cabinet.

This aquarium-only version is ideal for aquarists who already have a suitable stand plan or need the MAX NANO G2 tank system for a custom installation. It combines a rimless ultra-clear cube aquarium, ReefLED G2 60 lighting, REEF-SPEC rear sump filtration, MAX NANO protein skimming, 950 LPH Sicce return circulation, integrated automatic top-off, pump power control, NanoMat readiness, ReefATO+ upgrade compatibility, and hidden equipment management in a clean 45 cm cube footprint.

Red Sea MAX NANO G2 Aquarium-Only Reef System

• Premium nano reef platform: The MAX NANO G2 Aquarium Only gives reef keepers the core Red Sea tank system and included reef equipment without forcing the purchase of a cabinet.
• Compact 75 litre system volume: The 19.8 gallon total system volume keeps the aquarium manageable while still providing enough room for a carefully planned nano reef.
• Custom stand flexibility: Because this is the aquarium-only version, it is well suited to customers who want to use a proper aquarium stand, custom cabinetry, or a built-in installation that matches an existing space.
• All-in-one convenience: Lighting, rear sump filtration, protein skimming, return circulation, automatic top-off, surface skimming, chemical media support, and power control are designed to work together as one coordinated system.
• Clean hidden-equipment layout: The rear sump keeps equipment out of the display so the aquarium looks like a polished reef showcase rather than a compact tank filled with visible hardware.
• Excellent first reef or compact upgrade: The MAX NANO G2 is approachable for new reef keepers while still offering enough equipment quality and upgrade readiness for experienced aquarists building a refined small reef.

Rimless Ultra-Clear Cube Display

• 8 mm ultra-clear glass: The MAX NANO G2 uses ultra-clear front and side glass panels to improve clarity and reduce the greenish tint often seen in standard aquarium glass.
• Balanced cube footprint: The 45 cm x 45 cm x 45 cm layout gives the aquascape usable length, depth, and height in a compact footprint.
• Better depth than narrow nano tanks: The cube format allows for island rockwork, small caves, open sand sections, coral ledges, and more natural-looking front-to-back reef structure.
• Open-top rimless styling: The clean braceless design gives the aquarium a modern premium look while making feeding, coral placement, cleaning, and maintenance more convenient.
• Smart bevelled glass edges: Red Sea’s polished cube design helps the aquarium feel like a finished display piece rather than a basic glass box.
• Compact placement potential: The aquarium size works well for offices, condos, bedrooms, smaller living rooms, secondary reef displays, and dedicated nano reef spaces when installed on a suitable stand.

ReefLED G2 60 Lighting with ReefBeat Control

• Included ReefLED G2 60: The MAX NANO G2 Aquarium Only includes Red Sea’s ReefLED G2 60 light, giving the system a reef-specific LED fixture matched to the cube display.
• REEF-SPEC output: ReefLED G2 60 is designed for coral growth and coloration with tunable output from 10,000K reef-white to 23,000K REEF-SPEC Blue.
• Enhanced blue spectrum: The REEF-SPEC Blue channel includes violet, ultraviolet, and boosted 470 nm blue wavelengths to help bring out coral fluorescence and fish colour.
• Dedicated moonlight channel: A separate 3W moonlight channel provides low-level nighttime viewing without relying on the main daytime lighting channels.
• ReefBeat app control: Wi-Fi control through Red Sea’s ReefBeat app allows daily scheduling, acclimation programming, lunar cycle moonlight, random clouds, staggered sunrise and sunset, and custom viewing modes.
• Coral acclimation support: The acclimation program is useful when starting a new reef, adding new corals, or moving livestock from lower-light systems into the ReefLED environment.
• Rotatable mounting arm: The custom light mount attaches to the rear wall of the aquarium and can rotate upward for aquascaping, cleaning, and rear-sump access.

Hidden REEF-SPEC Rear Sump Filtration

• Integrated rear sump: The complete filtration path is hidden behind the display and covered by a rotatable rear screen for a cleaner room-facing presentation.
• Surface-skimming intake: Water enters through a removable surface skimmer, helping pull surface film and floating debris into the filtration path.
• 225 micron filter bag: The included mechanical filter bag captures suspended particles before water moves through the skimmer and media sections.
• MAX NANO protein skimmer: The integrated skimmer is designed around Red Sea’s REEF-SPEC criteria and helps remove dissolved organics before they contribute to excess nutrients.
• Skimmer performance approach: The NANO skimmer is designed to process the aquarium water volume multiple times per hour with a 3 to 1 water-to-air ratio.
• Quiet adjustable operation: The skimmer includes an adjustable outlet gate, air intake silencing, and outlet sound reduction to help keep operation controlled in small display spaces.
• Positive-flow media shelf: The fixed media shelf is positioned for direct water flow and is supplied with Red Sea REEF-SPEC Carbon for water polishing.
• Bubble trap return path: The sump layout helps reduce microbubbles before water returns to the display, keeping the viewing area clearer.

Circulation and Water Movement

• 950 LPH Sicce return pump: The included return pump moves water through the rear filtration system and returns it to the display at approximately 950 litres / 240 gallons per hour.
• Strong nano turnover: Red Sea lists the MAX NANO G2 circulation system as moving the tank’s entire water volume about ten times per hour.
• Adjustable return nozzle: Water returns through a discreet multidirectional nozzle that can be aimed to improve movement around rockwork and reduce low-flow zones.
• Supports coral health: Consistent water movement helps deliver oxygen, minerals, nutrients, and trace elements to corals while carrying waste toward the filtration intake.
• Clean display interior: The main pump sits in the hidden rear sump rather than taking up space in the display area.
• Additional flow planning: Depending on aquascape and coral selection, many reef keepers may still add a small wavemaker for broader random flow.

Auto Top-Off and G2 Upgrade Readiness

• Integrated automatic top-off: The MAX NANO G2 includes an ATO unit to help keep the rear-sump water level more consistent as evaporation occurs.
• Hidden freshwater reservoir: The 1.5 litre / 0.4 gallon freshwater reservoir is concealed behind the rear screen above the sump.
• Reduced daily top-off work: Red Sea lists the reservoir and rear-sump design as making the MAX NANO self-sufficient for about three days under typical evaporation conditions.
• NanoMat ready: The rear sump is designed to accept the optional Red Sea NanoMat, allowing future automatic fleece-roll mechanical filtration.
• ReefATO+ ready: The system is prepared for optional ReefATO+ integration for advanced top-off, temperature monitoring, and leak detection.
• Easy-access power center: Convenient pump controls make feeding, cleaning, and service easier without manually unplugging equipment from behind the aquarium.
• Upgrade without replacing the tank: The system can start as a clean stock all-in-one reef and accept automation upgrades as the reef matures.

Red Sea Max Nano G2 Aquarium Only Specifications

• Total system water volume: 75 litres / 19.8 gallons.
• Display tank water volume: 62 litres / 16.4 gallons.
• Rear sump water volume: 13 litres / 3.4 gallons.
• Aquarium dimensions: 45 cm L x 45 cm W x 45 cm H / 17.7 in x 17.7 in x 17.7 in, excluding light and cabinet.
• Glass: Rimless 8 mm ultra-clear front and side glass panels.
• Lighting: 1 x Red Sea ReefLED G2 60 with ReefBeat app control.
• Return pump: 950 LPH / 240 GPH Sicce return pump.
• Filtration path: Removable surface skimmer, 225 micron filter bag, MAX NANO protein skimmer, fixed media shelf, REEF-SPEC Carbon, bubble trap, return pump, and multidirectional return nozzle.
• Auto top-off: Integrated ATO with 1.5 L / 0.4 gal freshwater reservoir.
• Upgrade readiness: NanoMat ready and ReefATO+ ready with optional add-ons sold separately.
• Cabinet: Not included with this aquarium-only version.
• Recommended application: Saltwater nano reef, soft coral display, LPS reef, compact mixed reef, office reef, and premium first reef aquarium.

Application Notes for Aquarium-Only Installations

• Suitable stand required: This aquarium-only version must be installed on a level, structurally appropriate aquarium stand or support surface capable of safely supporting the filled system.
• Best use: The MAX NANO G2 Aquarium Only is ideal for customers who want the Red Sea tank system but prefer to choose their own stand or integrate the aquarium into custom cabinetry.
• Coral suitability: The included ReefLED G2 60, rear sump, skimmer, and ATO make the system suitable for thoughtfully planned soft coral, LPS, and mixed nano reef aquariums.
• SPS planning: Higher-demand SPS layouts require careful flow planning, stable alkalinity and calcium, appropriate nutrient levels, consistent salinity, and thoughtful coral placement.
• Stocking discipline: Nano reef systems reward careful fish and invertebrate selection based on adult size, temperament, swimming behaviour, and nutrient load.
• Not included: Cabinet, livestock, rock, sand, salt, heater, wavemaker, test kits, dosing equipment, optional NanoMat, optional ReefATO+, and additional filtration media are sold separately unless stated otherwise.

Red Sea MAX NANO G2 Series Video

Setup and Installation Notes

• Plan the stand first: Use only a level aquarium stand or support surface suitable for the filled weight of the system. Do not place the aquarium on furniture that is not designed to support an aquarium.
• Check level before filling: Confirm the stand and aquarium are level before adding water, rock, or sand.
• Install the rear sump components: Confirm the surface skimmer, filter bag, protein skimmer, media shelf, carbon, bubble trap, pump, ATO reservoir, and return nozzle are correctly installed before startup.
• Use RO/DI water: RO/DI water is recommended for saltwater mixing and top-off to help maintain cleaner chemistry and reduce avoidable algae issues.
• Cycle before stocking: Establish biological filtration before adding fish or corals, then stock slowly to maintain stability in the compact reef system.
• Use ReefBeat acclimation: Start new corals under appropriate acclimation settings and increase intensity gradually to reduce sudden light stress.
• Maintain the rear sump: Clean or replace mechanical filtration, service the skimmer, refill the ATO reservoir, and keep the rear sump clear so water flow remains strong.

What’s Included

• Red Sea MAX NANO G2 rimless ultra-clear glass aquarium
• Integrated rear sump filtration system
• Red Sea ReefLED G2 60 lighting system
• ReefLED mounting arm
• MAX NANO protein skimmer
• 950 LPH / 240 GPH Sicce return pump
• Removable surface skimmer
• 225 micron filter bag
• Fixed media shelf
• 100 g Red Sea REEF-SPEC Carbon
• Bubble trap
• Multidirectional adjustable return nozzle
• Integrated automatic top-off unit
• 1.5 L / 0.4 gal freshwater reservoir
• Rotatable rear sump screen
• Pump power center with on/off switches for skimmer and circulation pump

Shipping Notes

• This item is exempt from our free shipping policy.
• To avoid delays, please order Red Sea aquariums by themselves. If you are wishing to order multiple things, please place two separate orders: one for the aquarium and one for the rest of your products.
• Please call for a shipping quote if ordering from NWT, YK, or NUN.
• All Red Sea aquariums are brought in and shipped out on an as-ordered basis. The average turn-around time to ship an aquarium to you is two business days, except where noted below.
• All shipments outside of the Vancouver area are shipped via trucking company with residential and power tailgate delivery, and are fully insured.
• Tanks ordered within BC and, in some circumstances, Alberta may take an extra 5-10 business days to process. Systems ordered from Alberta and east of there usually ship within two business days direct from the distributor in Ontario.
• If you are ordering for pick-up from our store, please select in-store pickup to avoid delivery charges. You will be notified when the tank arrives, usually within 5-10 business days.
• Red Sea Max S Series aquariums are always special order and will take from 3-6 weeks to ship.
• Please note the freight company is only responsible for getting the aquarium to the destination address and off-loading it. They are not responsible for carrying it inside.
• All freight charges have been greatly subsidized to help you get up and running with your new Red Sea system.