Red Sea Max Nano G2 XL Aquarium

The Red Sea Max Nano G2 XL Aquarium is a premium 125 litre / 33 gallon all-in-one reef aquarium system designed for hobbyists who want more room than a standard nano reef while still keeping the clean rear-sump layout, integrated equipment, and compact Red Sea MAX NANO footprint.

This aquarium-only version includes the reef-ready tank system and core MAX NANO G2 equipment without a cabinet, making it ideal for customers who already have a suitable stand plan or need to match the aquarium into a custom installation. It combines rimless 10 mm ultra-clear glass, ReefLED G2 60 lighting, REEF-SPEC filtration, a MAX NANO XL protein skimmer, 1550 LPH Sicce return circulation, integrated auto top-off, a hidden rear sump, pump power control, NanoMat readiness, and ReefATO+ upgrade compatibility.

Red Sea MAX NANO G2 XL Aquarium System

• Deepest and widest MAX NANO layout: The XL format is larger than the Cube and Peninsula models, giving reef keepers more room for aquascaping, coral placement, open swimming space, and long-term coral growth.
• 125 litre / 33 gallon total volume: The added water volume provides more stability than smaller nano systems while still staying manageable for routine maintenance, water changes, and equipment access.
• Aquarium-only configuration: This version is supplied without the cabinet, allowing installation on an appropriate customer-supplied stand or custom furniture-style base.
• Complete all-in-one reef equipment package: The aquarium includes lighting, rear sump filtration, skimming, circulation, automatic top-off, surface skimming, media handling, and power control rather than requiring the customer to choose every component separately.
• Designed for serious compact reefs: The MAX NANO G2 XL is a strong fit for aquarists who want a premium compact reef system with more coral room than a typical desktop nano aquarium.

XL Reef Display with Ultra-Clear Glass

• 10 mm ultra-clear glass: Red Sea lists the MAX NANO G2 XL with 10 mm rimless ultra-clear glass for a crisp, premium viewing experience.
• 50 x 60 x 50 cm display proportions: The XL footprint adds valuable depth and width, making the reef feel more open and less cramped than a smaller cube-style system.
• More aquascaping freedom: The wider 60 cm dimension gives room for rock islands, caves, coral ledges, negative space, open sand sections, and layered coral zones.
• Clean rimless presentation: The open-top design keeps the focus on the reef and gives the aquarium a modern display-tank look.
• Hidden equipment area: The rear sump keeps filtration hardware behind the display so the main viewing area stays clean, natural, and reef-focused.

ReefLED G2 60 Lighting and ReefBeat Control

• Included ReefLED G2 60: The MAX NANO G2 XL includes Red Sea’s ReefBeat app-controlled ReefLED G2 60 light for reef-specific coral growth and colour.
• REEF-SPEC spectrum: The light can be tuned from 10,000K reef-white to 23,000K REEF-SPEC Blue, giving the aquarist control over daylight appearance, fluorescence, and coral-focused output.
• Enhanced blue channel: The REEF-SPEC Blue output includes violet, ultraviolet, and boosted 470 nm blue wavelengths to help fish and corals show strong colour and fluorescence.
• Dedicated moonlight channel: A separate 3W moonlight channel provides subtle nighttime viewing without using the primary daytime light channels.
• ReefBeat app features: Lighting can be scheduled and adjusted through ReefBeat, including acclimation, lunar cycle, staggered sunrise and sunset, random clouds, and custom viewing modes.
• Rotatable mounting arm: The LED mounting system attaches to the rear wall and can rotate upward for reefscaping, cleaning, and rear-sump access.

REEF-SPEC Rear Sump Filtration

• Fully hidden rear sump: The filtration system sits behind the display and is covered by a rotatable rear screen for a clean appearance and quick maintenance access.
• Surface-skimming intake: Water enters through a removable surface skimmer to help remove surface film and improve oxygen exchange, clarity, and light penetration.
• 225 micron filter sock: The mechanical filter sock traps suspended debris before water continues through the filtration path.
• MAX NANO XL protein skimmer: The integrated skimmer is designed around Red Sea’s REEF-SPEC criteria and helps remove dissolved organics before they break down into excess nutrients.
• Strong skimmer processing: The skimmer is designed to pass the aquarium volume through the skimmer approximately three times per hour with a 3 to 1 water-to-air ratio.
• Chemical media chamber: A dedicated media area provides a clean location for carbon or other chemical filtration media when water polishing or targeted filtration is needed.
• Bubble trap return path: The rear sump routes water through a bubble trap before returning it to the display to help reduce distracting microbubbles.

Circulation, Auto Top-Off, and Upgrade Path

• 1550 LPH Sicce return pump: The XL includes a 1550 LPH / 409 GPH Sicce return pump that moves the full system volume through the filtration path about ten times per hour.
• Adjustable return nozzle: Water returns through a multidirectional nozzle that can be aimed to improve movement around rockwork and reduce low-flow detritus zones.
• Integrated automatic top-off: The MAX NANO G2 XL includes an ATO unit with a 2.7 L / 0.7 gal freshwater reservoir hidden behind the rear screen.
• Short-term evaporation support: Red Sea lists the XL reservoir as sufficient for approximately 2-3 days of evaporation under typical conditions.
• NanoMat ready: The rear sump is designed so the filter sock compartment can be upgraded with an optional Red Sea NanoMat automatic fleece roller.
• ReefATO+ ready: The system is prepared for optional ReefATO+ integration for advanced top-off, temperature monitoring, and leak detection.
• Pump power center: Convenient on/off switches for the skimmer and circulation pump make feeding and maintenance easier without unplugging equipment manually.

Red Sea Max Nano G2 XL Aquarium Specifications

• Total system water volume: 125 litres / 33 gallons.
• Display tank water volume: 111 litres / 29.3 gallons.
• Display dimensions: 50 cm L x 60 cm W x 50 cm H / 19.7 in x 23.6 in x 19.7 in.
• Total system height: 137 cm / 54 in excluding the light unit when installed with a matching cabinet.
• Glass: Rimless 10 mm ultra-clear glass.
• Lighting: 1 x Red Sea ReefLED G2 60 with ReefBeat app control.
• Return pump: 1550 LPH / 409 GPH Sicce return pump.
• Filtration: Rear sump with removable surface skimmer, 225 micron filter sock, MAX NANO XL protein skimmer, chemical media chamber, bubble trap, and adjustable return nozzle.
• Auto top-off: Integrated ATO with 2.7 L / 0.7 gal freshwater reservoir.
• Upgrade readiness: NanoMat ready and ReefATO+ ready with optional add-ons sold separately.
• Cabinet: Not included with this aquarium-only version.

Application Notes for XL Reef Planning

• Best use: Ideal for saltwater reef aquariums, soft coral systems, LPS reefs, mixed reef displays, and hobbyists wanting a larger nano-style all-in-one platform.
• Stand requirement: This aquarium-only version must be placed on a suitable stand or support structure capable of safely supporting the filled aquarium.
• Coral planning: The ReefLED G2 60 and larger footprint give useful flexibility for soft corals, LPS corals, and carefully planned mixed reef layouts.
• Flow planning: The return pump provides strong system turnover, but additional wavemaker flow may be useful depending on rockwork and coral selection.
• 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.

Setup and Installation Notes

• Use proper support: Install the aquarium only on a level, structurally suitable aquarium stand or support surface designed for the filled system weight.
• Check level before filling: Confirm the aquarium is level before adding water, rock, or sand.
• Install rear sump components first: Confirm the surface skimmer, filter sock, skimmer, media chamber, 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.
• Use lighting acclimation: Use ReefBeat acclimation settings when starting the aquarium or adding new corals.
• Maintain the rear sump: Clean the filter sock, service the skimmer, refill the top-off reservoir, and keep the rear chamber clear so flow remains strong.

What’s Included

• Red Sea MAX NANO G2 XL rimless ultra-clear glass aquarium
• Integrated rear sump filtration system
• Red Sea ReefLED G2 60 lighting system
• ReefLED mounting arm
• MAX NANO XL protein skimmer
• 1550 LPH / 409 GPH Sicce return pump
• Removable surface skimmer
• 225 micron filter sock
• Chemical media chamber
• Bubble trap
• Multidirectional adjustable return nozzle
• Integrated automatic top-off unit
• 2.7 L / 0.7 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.