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Waterbox Aquariums - MARINE EX 90.3

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$ 2,799.00 2799.0 USD $ 2,799.00

$ 2,799.00

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Brand: Waterbox Aquariums

Waterbox Aquariums - MARINE EX 90.3


Overview

The Waterbox MARINE EX 90.3 delivers a premium saltwater aquarium experience with a design focused on aesthetics, functionality, and advanced filtration. Built for aquarists who want more internal space and optimal system performance, this external overflow system provides a sleek, rimless display, a robust sump setup, and marine-grade cabinetry to create a professional, high-clarity reefing environment.


Key Features

  • External overflow for increased aquascaping space
  • Ultra-clear low-iron glass with 91% light transmittance
  • Precision plumbing system with safety drain and silent operation
  • Durable aluminum-framed stand in Black, White, or Aspen
  • Includes mesh-ready top frame (mesh lid sold separately)
  • Integrated RO reservoir in sump


Display Aquarium

The 12mm ultra-clear glass provides a sharp, distortion-free view of your reef. High-strength black silicone reinforces durability while maintaining a clean finish. The external overflow sits behind the display - maximizing swimming room and aquascape design possibilities. A removable weir comb makes cleaning and maintenance simple.


Plumbing System

Designed for quick setup and quiet performance:

  • Precision gate valve for silent tuning
  • Safety drain and emergency overflow
  • Dual directional return nozzles
  • Quick-connect fittings for hassle-free installation


Sump System

The included acrylic sump provides a clean, functional space for advanced filtration:

  • 4" filter sock chamber (roller-compatible)
  • Spacious skimmer & media reactor chamber
  • Return pump chamber fits most pumps
  • Integrated RO reservoir supports most ATO systems


Cabinet Stand

The aluminum-framed cabinet is built for moisture resistance and long-term use. Laminated wood panels deliver a modern look, while adjustable leveling feet ensure stability. The open-back design supports easy routing of cords, hoses, and ventilation.


Specifications

Aquarium:

  • Dimensions: 35.4" L x 19.7" W x 21.7" H
  • Display Volume: 59.3 Gallons
  • Total System Volume: 89 Gallons
  • Glass Thickness: 12mm
  • Total Height (with Cabinet): 57.1"

Sump:

  • Dimensions: 31.5" L x 16.1" W x 15" H
  • Sump Volume: 29.7 Gallons
  • Acrylic Thickness: 5mm
  • Skimmer Chamber: 15" x 11.9"
  • Return Pump Chamber: 8.9" x 8.9"
  • RO Reservoir: 8.9" x 6.3"
  • RO Volume: 3.5 Gallons

Plumbing:

  • Main Drain: DN25 (32mm)
  • Emergency Overflow: DN25 (32mm)
  • Return: DN20 (25mm)
  • Return Nozzles: M20 (20mm)

Cabinet:

  • Dimensions: 35.4" L x 19.7" W x 35.4" H
  • Internal Dimensions: 32.4" x 17.6" x 32"


What's Included

  • Waterbox MARINE EX 90.3 Aquarium
  • Marine-Grade Aluminum Framed Cabinet
  • Precision-Cut Acrylic Sump
  • Full Plumbing Kit
  • 225 Micron Felt Filter Sock
  • Mesh Lid
  • Sock Silencer

Placing an order is simple - just add your item to the cart & complete the checkout process online. Once your order is confirmed, we'll reach out to you directly to schedule a local pick-up appointment at our facility.

* All local pick-ups are by appointment only *

Yes, even if a product is listed as "out of stock", it's still available to order!

Many of our products are fulfilled on-demand - so even if the product shows as "out of stock", you can still place your order. We'll source the product from our extensive distribution network & we'll notify you as soon as your order is ready for pick-up.

We offer local pick-up by appointment only. After you place an order, we'll contact you directly to schedule a convenient pick-up time at our facility.

Pick-up location: 7137 58th St N, Pinellas Park, FL 33781