Red Sea REEFER G3 Aquarium System 625

REEFER G3 series

Designed as the perfect reefscaping canvas, REEFER G3 systems combine REEF-SPEC infrastructure with the freedom to install all your preferred hardware.

These tanks come with hydrodynamically superior water management including a bespoke high precision gate valve, extra-fortified cabinets & aquariums, Euro-bracing on all models over 400 liters, REEF-SPEC ReefMat-ready sumps, an integrated smart ATO system, and an extended warranty of up to 5 years, offering peace of mind and long-term support.

REEFER G3’s are available in 17 models (170L/45gal – 1000L/264gal) and two formats: the classic front-facing design, including premium REEFER-S models, with even deeper and wider dimensions, and the Peninsula layout, ideal as a room divider with dual-side viewing.

Features

1. Reinforced ultra-clear glass

REEFER G3 aquariums are constructed from beveled edge ultra-clear glass with increased thickness of up to 19 mm/0.75”. REEFER models above 400 liters/100 gal. are eurobraced for extra strength.

2. Fortified plywood cabinet

REEFER G3 aquariums are mounted on marine-spec plywood cabinets with leveling feet, with REEFER 525 models and above further reinforced with front aluminum supports.

3. Pump return outlets

All REEFER models now benefit from hydrodynamically superior pipping for improved water distribution. REEFER 350 and above have dual 25 mm diameter return pump outlets, while REEFER 750 and above have 32 mm diameter dual outlets. All models with dual outlets can be connected to single or dual return pumps.

4. Surface Skimmer

The piping is hidden inside a large central overflow box, which has a large surface skimmer with removable comb parts, for easy cleaning.

5. Silent downflow system

The large downflow pipes reduce turbulence, meaning a quieter flow, and have been redesigned with a rectangular profile, enhancing the circulation.

6. ReefGate high-precision flow valve

All REEFER G3s include the new ReefGate, high-precision bespoke gate valve on the downflow pipe, allowing for easy regulation of the flow and a near silent operation.

7. Hydrodynamically superior piping

All models come with hydrodynamically superior piping that ensures a powerful flow throughout the system.

8. Reef Spec sump

The Reef Spec sumps are ReefMat and Refugium-ready, and come with an integrated smart ATO module. The sumps also have an adjustable-height skimmer chamber, removable micron filter bags and media cups, and a bubble trap to prevent air bubbles from returning to the aquarium.

9. ReefMat-ready

The easily removable mechanical filtration compartment allows for a quick Plug & Play installation of the ReefMat 250/500/1200.

10. ReefATO module

11. Chiller & hardware chamber

Most models come with an additional chamber that can be used for a chiller, controllers and other equipment.

Red Sea REEFER G3 Aquarium System 625 Specs

Total system water volume	620 L
Display tank water vol.	497L
In-Cabinet sump water vol.	123L
Display tank Length	150cm
Display tank width	65cm
Display tank height (excluding light unit)	60 cm
Total system height (excluding light unit)	148cm
Ultra-clear front glass	19mm
Ultra-clear side glass	19mm
Bottom glass	15mm
Back glass thickness	19mm
Rim	Euro Brace
ReefLED advanced light system	DLX Version 3x Unit RL G2 115 (optional)
Nominal total power	345/340W
Water circulation	Not included
Main system pump	Not included
Number of outlets	2x 25mm (Single or dual pump)
Hydrodynamic piping with Gate valve	Yes
Protein Skimmer	Not included
ReefMat / NanoMat	Not included
Bubble trap sponge	Yes
Mechanical Filtration filter bags (225 micon-thin-mesh)	2
Filter media cup	2
Carbon Filtration Media - Red Sea REEF-SPEC® carbon	not included
ReefATO+ kit included	yes
ReefATO+ Ready	ReefATO+ Ready (included)
Slide out control panel	Not included