{"product_id":"red-sea-reefer-425-g3","title":"Red Sea REEFER 425 G3 — 114 Gal Euro-Brace Reef Aquarium 47 in with ReefATO+","description":"\u003cp\u003eThe Red Sea REEFER 425 G3 takes the same 47-inch footprint as the \u003ca href=\"\/en\/products\/red-sea-reefer-350-g3\"\u003eREEFER 350 G3\u003c\/a\u003e and pushes it 4 inches deeper: 60 cm front to back instead of 50. That adds 70 litres of display water without claiming any extra wall space, and gives your aquascape real three-dimensional room to work with. It is also the first model in the lineup built with a Euro-brace frame and 15 mm side glass.\u003c\/p\u003e\n\u003cp\u003eWatch Stéphane walk through the auto top-off install on his own system — the same ReefATO+ kit that ships with the 425:\u003c\/p\u003e\n\u003cdiv style=\"max-width:340px;margin:20px auto;\"\u003e\u003cdiv style=\"position:relative;padding-bottom:177.78%;height:0;overflow:hidden;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/WRicr45EG2k\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allowfullscreen title=\"Installing the Red Sea ReefATO+ by ReefSolution\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003ch2\u003eOfficial REEFER 425 G3 specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTotal system volume:\u003c\/strong\u003e 433 L (114.4 US gal)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplay volume:\u003c\/strong\u003e 343 L (90.6 US gal)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIn-cabinet sump volume:\u003c\/strong\u003e 90 L\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplay tank dimensions:\u003c\/strong\u003e 120 × 60 × 55 cm (47 in long)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTotal system height:\u003c\/strong\u003e 142 cm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUltra-clear glass:\u003c\/strong\u003e 12 mm front, bottom and back; 15 mm sides\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRim type:\u003c\/strong\u003e Euro-brace\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOperating weight:\u003c\/strong\u003e 690 kg (1520 lb) — glass tank alone: 95 kg (210 lb)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe cabinet top sits 86 cm (34 in) off the floor per the manufacturer. Red Sea calls for 10 cm (4 in) of clearance behind the system and 60 cm (24 in) on one side for access, in a room held at a stable 22 °C (72 °F).\u003c\/p\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:20px 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/ua1FQpOs72s\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allowfullscreen title=\"The REEFER G3 series by Red Sea\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eWhy Euro-brace at this size\u003c\/h2\u003e\n\u003cp\u003eAt 60 cm deep and 433 L, Red Sea reinforces the structure with a Euro-brace frame and 15 mm glass on the sides. The brace reads as a thin band along the top edge — the viewing panel stays wide open while overall rigidity goes up. The downpipe carries the high-precision ReefGate valve, which sets the water level in the overflow box for a steady, controlled flow down to the sump.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the box — and what isn't\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e the Euro-brace glass tank, the marine-grade plywood cabinet with adjustable feet, the ReefMat-ready REEF-SPEC sump with 225-micron mechanical filtration, the internal plumbing kit with ReefGate valve, and the ReefATO+ kit for evaporation top-off.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e the return pump, lighting, protein skimmer, wave pumps — and the top-off water reservoir. Red Sea states it plainly: G3 systems ship without a reservoir for the ATO. The \u003ca href=\"\/en\/products\/red-sea-reefcan\"\u003eReefCan\u003c\/a\u003e was designed for exactly that job.\u003c\/p\u003e\n\u003ch2\u003eRed Sea's published MAX configuration for the 425\u003c\/h2\u003e\n\u003cp\u003eThe official MyREEFER configurator recommends for this model: 2 units of \u003ca href=\"\/en\/products\/reefled-g2-eclairage-led\"\u003eReefLED G2 115 or 170\u003c\/a\u003e for lighting, 1 \u003ca href=\"\/en\/products\/reefrun-g2-dc-pump\"\u003eReefRun G2 6000\u003c\/a\u003e return pump (3600–6500 lph), the \u003ca href=\"\/en\/products\/red-sea-600dc-reefer-skimmer\"\u003eREEFER Skimmer 600\u003c\/a\u003e and the \u003ca href=\"\/en\/products\/red-sea-reefmat-fleece-roller-500\"\u003eReefMat 500\u003c\/a\u003e both flagged \"Best size for SPS\", plus 2 \u003ca href=\"\/en\/products\/red-sea-reefwave%C2%AE-silent-smart-powerful-45\"\u003eReefWave 45\u003c\/a\u003e wave pumps. At 433 L total, the system lands squarely within the ReefMat 500's rated range.\u003c\/p\u003e\n\u003ch2\u003ePlan for these as well\u003c\/h2\u003e\n\u003cp\u003eAn RO\/DI unit for top-off and mixing water, a \u003ca href=\"\/en\/products\/red-sea-reefcan\"\u003eReefCan\u003c\/a\u003e as the ReefATO+ reservoir, and a \u003ca href=\"\/en\/products\/red-sea-aquarium-net-cover-24\"\u003eNet Cover screen kit\u003c\/a\u003e if you keep jumpers. Red Sea suggests keeping at least 3 sets of 225-micron filter socks in rotation. Need more length? The \u003ca href=\"\/en\/products\/red-sea-reefer-g2-xl-525\"\u003eREEFER 525 G3\u003c\/a\u003e stretches the same platform to 59 inches.\u003c\/p\u003e\n\u003ch2\u003eOur advice\u003c\/h2\u003e\n\u003cp\u003eThe REEFER 425 G3 is the 350's big brother: same length, but a much wider three-dimensional sense of depth — and for swimming room and the size of fish you can keep, that changes things. At this size, the Euro-brace is no longer optional: it stiffens the tank. And honestly, you barely see it — just a thin black line along the top. Red Sea's Euro-braces are so well made you forget they're there. Always run an RO\/DI unit when you set up your aquarium: RO water is the foundation of a healthy tank, and we strongly recommend it. All of that comes with the 5-year warranty and the support behind it. And remember: when you buy an aquarium from us, we call you, we help you, and if you have questions, we're always there to back you up — a reef tank takes knowledge, and that comes with time and good support. — Stéphane\u003c\/p\u003e\n\u003ch2\u003eWarranty\u003c\/h2\u003e\n\u003cp\u003eREEFER G3 systems carry a standard 3-year warranty. Register your aquarium on Red Sea's website within 90 days of purchase and you receive 2 more years — 5 years total — at no charge. Canada is on the list of eligible countries.\u003c\/p\u003e\n\u003ch2\u003eWhy buy from ReefSolution\u003c\/h2\u003e\n\u003cp\u003eAuthorized Red Sea dealer in Quebec. Secure delivery across Canada. Guidance before and after the sale from a team that runs its own reef tanks.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWhat's the difference between the REEFER 350 G3 and the REEFER 425 G3?\u003c\/h3\u003e\n\u003cp\u003eBoth are 120 cm (47 in) long. The 425 is 10 cm deeper (60 cm vs 50), which raises display volume from 273 to 343 L and total volume from 342 to 433 L. The 350 is rimless; the 425 moves to a Euro-brace frame with 15 mm sides.\u003c\/p\u003e\n\u003ch3\u003eDoes the REEFER 425 G3 come with a return pump and skimmer?\u003c\/h3\u003e\n\u003cp\u003eNo. The system includes the tank, cabinet, REEF-SPEC sump, plumbing with the ReefGate valve, and the ReefATO+ kit. Return pump, lighting, skimmer and flow are chosen separately to match your build.\u003c\/p\u003e\n\u003ch3\u003eWhat return pump does the REEFER 425 G3 need?\u003c\/h3\u003e\n\u003cp\u003eThe series manual recommends one ReefRun G2 6000, adjustable from 3600 to 6500 lph (950–1700 gph).\u003c\/p\u003e\n\u003ch3\u003eIs the ATO water reservoir included?\u003c\/h3\u003e\n\u003cp\u003eNo. The ReefATO+ kit is supplied, but the manufacturer specifies that G3 systems do not include a top-off reservoir. Red Sea's ReefCan fills that role inside or beside the cabinet.\u003c\/p\u003e\n","brand":"Red Sea Reefer","offers":[{"title":"White","offer_id":42824789590187,"sku":"R45147","price":5299.99,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":42824790245547,"sku":"R45146","price":5299.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/product-20250827-78ed184da77faf302a024f88807e29ee.png?v=1785263961","url":"https:\/\/reefsolution.com\/en\/products\/red-sea-reefer-425-g3","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}