The Red Sea REEFER™ 300 G3 is the perfect system for hobbyists seeking a wider,
more dramatic view ofjnjnjknjknj their reefscape. With a substantial total volume of 79.3
gallons and a greater depth (width) of 22.6 inches, this rimless aquarium provides
ample space for complex coral placement and deeper aquascapes.
Built on the G3 platform, the REEFER 300 is quiet, high-performing, and seamlessly
compatible with the Red Sea smart ecosystem, all controlled via the ReefBeat™ App.
G3 Key Features
● Integrated ReefATO+ System: The G3 models include the cutting-edge, app-
controlled ReefATO+ as standard. This highly reliable 3-in-1 smart device
ensures:
o Stable Salinity via a precise Auto Top-Off system (solid-state sensor).
o Accurate digital Temperature Monitoring.
o Highly sensitive Leak Detection (titanium probes).
● Next-Level Water Management: The plumbing system is fully redesigned for
superior quietness and efficiency.
o ReefGate™ High-Precision Valve: A bespoke gate valve on the main
downpipe allows for minute, easy adjustments, guaranteeing stable water
levels and achieving near-silent operation.
o Optimized Hydrodynamics: Improved internal piping delivers up to 50%
more water circulation while maximizing your return pump's efficiency.
● Rimless, Ultra-Clear Glass: Enjoy vibrant, distortion-free viewing of your reef
through thick, beveled-edge glass, engineered for a modern, sleek look.
● ReefMat-Ready Sump: The professional REEF-SPEC glass sump features a
dedicated mechanical filtration compartment perfectly sized for plug-and-play
installation of a Red Sea ReefMat automatic fleece roller filter (sold separately)
or standard filter cups/media.
● Fortified Cabinet: A sleek, marine-spec cabinet constructed from extra-fortified
Laminated plywood with leveling feet ensures long-term stability and moisture
resistance.
● Assembly-Ready Plumbing: Includes all pre-cut, quick-connect piping,
eliminating the need for messy gluing or cutting during setup.

REEFER 300 G3 Specifications

Feature Imperial (Approx.)
Display Tank Volume 65 Gallons
In-Cabinet Sump Volume 15 Gallons
Total System Volume 79.3 Gallons
Display Tank L x W x H 35.4" x 22.6" x 21.7"