Waterbox MARINE EX 90.3 – Premium Reef-Ready Aquarium System + furniture
The Waterbox MARINE EX 90.3 takes the popular MARINE X platform further with a low-profile external overflow, professional all-acrylic sump and upgraded plumbing system. By relocating the overflow plumbing behind the aquarium, the EX provides a cleaner display and maximises the internal space available for aquascaping.
Specifications:
Display dimensions: 900 × 500 × 550 mm (35.4 × 19.7 × 21.7")
Display volume: 224.5 litres / 59.3 US gallons
Total system volume: 321.8 litres / 85 US gallons
Glass thickness: 12 mm
Total height with cabinet: 1,450 mm / 57.1"
Key Features:
Ultra-clear rimless glass construction
Low-profile external overflow system – relocates plumbing behind the aquarium and maximises usable display space
Greater freedom for rockwork and aquascaping compared with a conventional internal overflow
Dual return system
Precision gate valve for quiet and stable siphon adjustment
Integrated return-line check valve helps prevent backflow into the sump during pump shutdowns or power cuts
Pre-engineered Quick Connect plumbing for straightforward, tool-free assembly
Professional all-acrylic sump
Dual filter sock mechanical filtration
Removable filter sock tray allows easy conversion to a filter roller
Large equipment chamber suitable for protein skimmers and media reactors
Integrated RO/DI freshwater reservoir for an automatic top-off system
Custom-fit mesh lid included to help prevent fish jumping while maintaining airflow and light penetration
Marine-grade laminated cabinet
Adjustable levelling feet
Corrosion-resistant stainless-steel hinges
Cabinet available in Black, White or Aspen
3-year Waterbox warranty
What's Included:
MARINE EX 90.3 aquarium
Matching cabinet
Professional acrylic sump
External overflow system
Quick Connect plumbing
Precision gate valve
Integrated check valve
Dual filter socks and removable filtration tray
Integrated RO/DI reservoir
Custom-fit mesh lid
Lighting, return pump, protein skimmer, heater, circulation pumps and other reef equipment can be selected separately according to the intended setup.
The MARINE EX 90.3 is particularly suited to serious reef keepers who want a substantial 85-gallon / 322-litre system without moving to a very large aquarium footprint. Compared with the MARINE X 90.3, the external overflow and upgraded acrylic sump are the main reasons to choose the EX, providing a cleaner display and a more premium filtration layout.