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REEFER 300 G3+ Aquarium
- 79.3 Gallon Premium Reef-Ready Aquarium System
- 65 Gallon Display with a 14.3 Gallon Sump
- Includes ReefControl Lite Controller
- Redesigned Flow System Delivers Up to 50% More Water Circulation
- ReefMat-Ready REEF-SPEC Sump with Digital ATO Control
- Eurobraced Ultra-Clear Glass with High-Quality Euro-Silicone
- Fully Customizable with Your Choice of Lighting, Pumps, Filtration, and More
The Red Sea REEFER 300 G3+ is a premium reef-ready aquarium system built to give you a solid foundation while leaving the equipment choices up to you. With a 65 gallon display, 14.3 gallon sump, integrated ReefControl Lite, and an updated high-flow plumbing system, this G3+ system provides the core infrastructure needed to build a modern reef aquarium around your preferred lighting, circulation, return pump, skimmer, and filtration equipment.
The G3+ platform also places a strong emphasis on aquarium construction. Ultra-clear glass is bonded using high-quality euro-silicone and reinforced with eurobrace, while the aquarium is supported by a floating-look aluminum support system.
Built for the Next Generation of Reefkeeping
The REEFER 300 G3+ Aquarium is constructed with ultra-clear glass bonded using high-quality euro-silicone and reinforced with Red Sea's eurobrace system. The bracing adds structural support while maintaining the clean, open appearance expected from a modern reef display.
This model features 0.47" ultra-clear front glass, 0.47" ultra-clear side glass, 0.47" bottom glass, and 0.39" back glass.
The redesigned G3+ flow system delivers up to 50% more water circulation while significantly reducing energy consumption. A high-precision gate valve makes it easier to fine-tune water flow through the overflow and sump.
This model features 1x 25mm return outlet(s) and supports a single return pump configuration.
The REEFER 300 G3+ Aquarium includes Red Sea's ReefControl Lite Controller, providing a central hub for compatible ReefSense probes, sensors, and 12V DC devices. Through the ReefBeat App, ReefControl brings monitoring and control of compatible Red Sea equipment together in one connected ecosystem.
- Supports Up to 2 ReefSense Probes & Sensors
- Supports 1 Compatible 12V DC Device
- ReefBeat App Connectivity
The included digital ATO Module works through the ReefControl system to manage automatic top-off and includes an integrated temperature sensor, bringing everyday water-level and temperature monitoring into the ReefBeat ecosystem.
The 14.3 gallon REEF-SPEC sump is ReefMat-ready and includes a slide-in refugium wall, adjustable skimmer chamber with bubble trap, and the high-precision gate valve used to fine-tune flow through the system.
All REEFER G3 aquariums include a standard 3-year warranty. Register your brand-new Red Sea system within 90 days of the original date of purchase to add 2 years of protection at no extra cost. Please see Red Sea's website for full terms & conditions.
Specifications
- Aquarium Style: Standard
- Bracing: Eurobrace
- Display Tank Dimensions: 35.4" L x 22.6" W x 21.7" H
- Total System Height: 55.9"
- Display Tank Volume: 65 Gallons
- Total System Volume: 79.3 Gallons
- Sump Volume: 14.3 Gallons
- Front Glass Thickness: 0.47"
- Side Glass Thickness: 0.47"
- Bottom Glass Thickness: 0.47"
- Back Glass Thickness: 0.39"
- Return Outlets: 1x 25mm
- Return Pump Configuration: Single
- Aquarium Support: Floating Look with Aluminum Support
What's Included?
- REEFER 300 G3+ Aquarium System
- ReefControl Lite Controller
- Digital ATO Module with Integrated Temperature Sensor
- REEF-SPEC Sump
- Plumbing with High-Precision Gate Valve
Note: ReefATO+ is not compatible with freshwater setups.
| SKU | REEFER-300-G3-PLUS-RED-SEA |
|---|---|
| Aquarium Type | Saltwater |
| Aquarium Size | 50 - 75 Gallons |
| Dimensions | 35.4" L x 22.6" W x 21.7" H (Aquarium) |
| Shape / Style | Rectangle (Traditional) |
| Overflow | Internal |
| Trim / Bracing | Eurobrace |
| Total Volume | 79.3 Gallons |
| Material | Glass |
| Glass Thickness | 12mm (front), 12mm (sides), 12mm (bottom), 10mm (back) |
| Stand Material | Plywood |
| Warranty | 5 Year Manufacturer Warranty (3 years standard + 2 with online registration) |

















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