The Red Sea REEFER™ MAX 250 G3 is a perfectly balanced, mid-sized aquarium
system designed for advanced reef keeping in a practical footprint. With a generous 66-
gallon total capacity, its 39-inch length offers substantial room for diverse coral and fish
populations, all supported by Red Sea’s latest advancements.
The REEFER MAX G3 series is the ultimate expression of the Red Sea reef ecosystem,
offering a simplified, cost-effective, and performance-optimized system. It eliminates the
hassle of selecting and ensuring compatibility of individual components by including all
essential high-end smart equipment.
Built on the G3 platform, the REEFER 250 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 MAX 250 G3 Specifications
Feature Imperial (Approx.)
Display Tank Volume 54.4 Gallons
In-Cabinet Sump
Volume 11.6 Gallons
Total System Volume 66 Gallons
Display Tank L x W x H 39.4" x 19.7" x 20.9"

This MAX system includes the hardware below:
2x ReefLED G2 115 & Mounting Arms, 1x DC Skimmer 300, 2x ReefWave 25, 1x
ReefRun G2 4000, 1x ReefRun Controller, 1x ReefMat 250, 1x Slide-out control panel
25, 1x ATO+