Description
The Red Sea REEFER MAX 425 G3 takes the same G3 chassis and adds Red Sea’s full REEF-SPEC equipment package on top, so the system runs on day one instead of waiting on separately ordered filtration and lighting. Its display holds 90.6 gallons, the sump holds 24, and the whole system carries 114.4 gallons of water on a 47.2 by 23.6 inch footprint.
REEFER MAX 425 G3 specifications
| Display volume | 90.6 US gallons |
|---|---|
| Sump volume | 24 US gallons |
| Total system volume | 114.4 US gallons |
| Tank footprint (L x W) | 47.2 x 23.6 inches |
| Tank height | 21.7 inches |
| Total height, tank on cabinet | 55.9 inches |
| Cabinet finishes | Black or white |
| Warranty | Up to 5 years for eligible original U.S. purchasers who register the new system with Red Sea within 90 days. Non-transferable. |
Volumes are the manufacturer’s figures for the system as built. Actual water volume in your room will be lower once rock and sand go in. Total height is measured to the top of the tank with it standing on its cabinet, so measure your ceiling and any shelf above the tank before you order.
Compare every REEFER G3 size side by side if you are still deciding. Footprints, tank heights and total heights on the cabinet, all seventeen chassis on one page.
What the MAX package adds
- REEFER DC 600 protein skimmer, factory-fitted in the sump
- ReefMat 500 fleece roller filter, factory-fitted in the sump
- Two ReefWave 45 DC circulation pumps
- Two ReefLED G2 115 on the Red Sea mounting arms
- ReefRun G2 6000 DC return pump
- Slide-out control panel 60, fitted in the cabinet
- ReefATO+ auto top-off, temperature monitor and leak detector on the ReefBeat app
- Ultra-clear rimless glass, marine-spec cabinet in black or white
- Eligible original U.S. purchasers can receive five-year warranty coverage by registering an eligible new Red Sea system within 90 days. The warranty is non-transferable.
The reason to buy MAX over the standard REEFER is not convenience, it is sizing. Every piece in the package is matched at the factory to this tank’s water volume, so skimming, flow and top-off are correct from the first day rather than guessed at and re-bought six months in.
Will it fit, and is it the right size for you
Four feet long, 23.6 inches deep, 90.6 gallons in the display. If someone asks us which REEFER to buy and gives us no other information, this is the one we name. The footprint takes a real aquascape, the volume is forgiving enough to survive a mistake, and it still fits a normal wall in a normal house.
What goes with the REEFER MAX 425 G3
A lid is the one accessory we tell people to buy at the same time as the tank, not later. Every wrasse, every anthias and most of the tangs worth owning will find the one gap you left open. The one cut for this exact model is the Red Sea mesh lid for the REEFER 425 G3.
- Everything else Red Sea: salt, Reef Foundation, Trace Colors, test kits, dosing and ATO are all in our Red Sea department.
If you are working out the real number before you commit, we wrote up what a saltwater aquarium actually costs with actual figures from builds we have done. And if you want us to handle the whole thing, that is what our aquarium installation and maintenance page covers.
Buying it from us
We are an authorized Red Sea dealer and we order any REEFER G3 configuration directly, including finishes and sizes that are not listed on this page. If you are in Key West or anywhere in the Keys, we also install: delivery, leveling, plumbing, the first fill, cycling and the handover. We build these tanks for a living, so if you want to talk through whether the REEFER MAX 425 G3 is the right call before you spend the money, call the shop and ask for me.
Full manufacturer specifications are on Red Sea’s website.
Shipping See current rates and ship days.
Shipping & Returns
- Equipment and dry goods ship at their own rate. Free shipping at $349 or more applies to qualifying livestock only — corals, fish, inverts and live copepods. The $10 box & handling fee is a livestock packing fee and does not apply to dry-goods orders.
- All sales are final on equipment and dry goods. We are a retail store, not the manufacturer.
- Register your product with the manufacturer and keep your receipt — their warranty is how a faulty unit gets replaced, and they are faster at it than a shop could be.
- Not sure who to contact for a warranty claim? Call us and we will point you to the right place.
Ships from our Key West store · (305) 850-9949
Your Red Sea tank, with the details worked out.
Send us your preferred model, cabinet color, delivery ZIP and buying timeframe. We will review availability, equipment choices and delivery arrangements so you can evaluate a complete quote before committing.
Catalog prices are planning estimates. Final availability, delivery eligibility, freight and applicable tax require confirmation. Installation and maintenance is a local service in Key West and the Florida Keys; systems ship nationwide and you arrange the install elsewhere.
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