Red Sea REEFER MAX 200 G3 Aquarium System (42 Gal)

Red Sea REEFER MAX 200 G3 Aquarium System (42 Gallon) is the ultimate plug-and-play reef aquarium. Every REEFER G3 MAX arrives with Red Sea's best-in-class water management, filtration, circulation, and lighting already matched to the tank, all controllable from the Red Sea ReefBeat app. No guessing about which equipment to run or whether it is compatible. Just pick your stand color and build your reef. Want a smaller footprint? See the REEFER MAX 170 G3, or browse all aquarium systems and corals.

What’s Included

• REEFER MAX 200 G3 aquarium: ultra-clear, beveled-edge, rimless glass with a low-profile black overflow and hidden plumbing.
• Marine-spec cabinet in your choice of Black or White, with a matching sump and pre-glued plumbing.
• ReefLED G2 115 light + mounting arm (reef-safe LED, ReefBeat app control).
• REEFER DC 300 Protein Skimmer (self-leveling, smart-controlled, Sicce PSK pump).
• ReefWave 25 gyre powerhead (1980 GPH cross-flow circulation).
• ReefRun G2 4000 DC return pump + ReefRun controller.
• ReefMat 250 automatic filter roller (app-monitored mechanical filtration).
• ReefATO+ auto top-off with temperature monitoring and leak detection.
• Slide-Out Control Panel 25 to mount your controllers in one place.
• 5-year manufacturer warranty (3 years standard + 2 years with registration).

Smart, App-Controlled Reefing

• ReefBeat app: run the light, pumps, skimmer, ATO, and filter roller from one app, with schedules, feed mode, alerts, and safety shut-offs.
• ReefLED G2 115: 115W, ~500 PAR at the surface, adjustable 10,000K to 23,000K, boosted blue and UV for coral color and growth.
• REEFER DC 300 skimmer: manual neck cleaner, precision foam control, and a foam-view window.
• ReefMat 250: hands-off mechanical filtration that alerts you when the fleece runs low.
• ReefATO+: keeps salinity stable and watches for leaks with titanium probes.

Specifications

Choose Your Stand Color

Pick Black or White from the drop-down above. The marine-spec laminated cabinet is built for strength and moisture resistance with leveling feet and stainless steel hinges. Selecting a color shows its matching render.

Recommended Pairings

• Salt mixes: mix up saltwater for your fill and water changes.
• CaribSea Ocean Direct: live marine sand to start the reef.
• Seachem HydroTote: haul RO/DI and saltwater for pickup and top-off.
• Corals: stock your new reef.
• All aquarium systems: compare other reef-ready tanks.

FAQ

Is this a complete system?
Yes. The MAX package includes the tank, cabinet, sump, plumbing, ReefLED G2 light, DC skimmer, ReefWave circulation, ReefRun return pump, ReefMat filter roller, and ReefATO+, all app-controlled. Add salt, sand, rock, and livestock and you are reefing.

Freshwater or saltwater?
Saltwater and reef only. The ReefMat and ReefATO+ are not compatible with freshwater setups.

What are the display dimensions?
The display tank is 23.6 in x 22.6 in x 20.9 in (41.7 gallons), and the total system stands 55.1 in tall.

How is it different from the 170?
Same MAX equipment package and features, but a larger tank: 41.7 gallons of display (52.8 total) versus 33.8 gallons on the 170, with more front-to-back depth.

How does the warranty work?
Every REEFER G3 includes a 3-year warranty, plus 2 more years when you register your system with Red Sea within 90 days of purchase.