Max Your Aquascape.
The first Waterbox Aquarium® built with an external overflow system. Maximizing internal space and giving full creativity to aquascaping.







Building on the MARINE X platform, the MARINE EX line features a low-profile external overflow system paired with professional-grade acrylic sumps—delivering a sleeker display and an advanced filtration layout. Marine-grade cabinetry offers superior corrosion resistance, making the MARINE EX perfect for serious reef keepers seeking both functionality and sophistication.
Dimensions: x x
Height with Cabinet:
Display Volume:
Total System Volume:
Glass Thickness:
For more detailed information click here.
Pairs well with
QuickShip Aquariums
Don’t want to wait for your dream aquarium? With our QuickShip Aquariums, you won’t have to. These select systems are in stock and ready to leave our warehouse within 3–5 business days of your order.
That means your new Waterbox can be on its way to you in less than a week, so you can start building the aquarium you’ve always imagined—faster than ever before.
Standard Aquarium Lead Times
All shipping timelines provided are estimates only and may vary based on overall demand, seasonal holidays, and logistics factors such as freight capacity or international cargo ship delays. Please note that shipping speeds are calculated in business days and do not include weekends or holidays.
While we work hard to meet or exceed our stated timeframes, unforeseen circumstances in transit may extend delivery windows. Rest assured, our team will keep you updated every step of the way and provide tracking details as soon as your order ships.
Estimates Only*
All shipping timelines provided are estimates only and may vary based on overall demand, seasonal holidays, and logistics factors such as freight capacity or international cargo ship delays. Please note that shipping speeds are calculated in business days and do not include weekends or holidays.
While we work hard to meet or exceed our stated timeframes, unforeseen circumstances in transit may extend delivery windows. Rest assured, our team will keep you updated every step of the way and provide tracking details as soon as your order ships.
The first Waterbox Aquarium® built with an external overflow system. Maximizing internal space and giving full creativity to aquascaping.


Precision-designed for the MARINE EX, the included mesh lid provides a secure barrier to prevent fish from jumping while maintaining maximum light penetration and airflow for a healthy aquatic environment.
Our plumbing systems offer quick and easy assembly, while delivering high-performance results equivalent to those achieved through custom designs.

Designed for the serious reefkeeper, the MARINE EX acrylic sump system redefines what advanced filtration should be—precise, efficient, and built to last.

The MARINE EX stands on a marine-grade laminated cabinet that blends durability with contemporary design. Clean lines, adjustable leveling feet, and soft-close doors create a premium look and feel, while the spacious interior provides easy access to equipment and wiring.


Waterbox Aquariums® warrants your product against defects in materials and workmanship for a period of 3 years, valid from the original date of purchase.