{"product_id":"red-sea-reefer-350-g3","title":"Red Sea REEFER 350 G3 — Rimless 90.3 gal Reef Aquarium on a 47 in Footprint","description":"\u003cp\u003eThe \u003cstrong\u003eREEFER 350 G3\u003c\/strong\u003e is our best-selling Red Sea system, and its spot in the lineup explains a lot: a 47.2 in (120 cm) viewing pane, 90.3 gal (342 L) of total volume, and it is the last \u003cstrong\u003erimless\u003c\/strong\u003e model as you move up the series — from the 425 onward, Red Sea switches to Euro-brace construction. If you want the big saltwater display with nothing framing the glass, this is where the road ends.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Red Sea publishes for this model\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTotal system water volume:\u003c\/strong\u003e 342 L (90.3 gal US)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplay tank volume:\u003c\/strong\u003e 273 L (72.1 gal US)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIn-cabinet sump volume:\u003c\/strong\u003e 69 L (18.2 gal US)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplay tank (L × W × H):\u003c\/strong\u003e 120 × 50 × 53 cm (47.2 × 19.7 × 20.9 in)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTotal system height:\u003c\/strong\u003e 140 cm (55.1 in), excluding the light unit\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUltra-clear glass:\u003c\/strong\u003e front 12 mm (0.5 in) · sides 15 mm (0.6 in) · bottom 12 mm (0.5 in) · back 12 mm (0.5 in)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRim type:\u003c\/strong\u003e rimless, beveled edges, no bracing\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCabinet:\u003c\/strong\u003e marine-spec plywood with leveling feet, white or black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEvery number above comes from Red Sea's published spec table and its MyREEFER configurator, both re-read while building this page.\u003c\/p\u003e\n\n\u003ch2\u003eChoosing between the 350 and the 425\u003c\/h2\u003e\n\u003cp\u003eBoth share the same 120 cm frontage and the same cabinet height. What separates them is depth and structure: the \u003ca href=\"\/en\/products\/red-sea-reefer-g2-xl-425\"\u003eREEFER 425 G3\u003c\/a\u003e adds 10 cm of depth (60 cm instead of 50) and 91 L of volume, but does it with a Euro-brace ring around the top of the tank. The 350 keeps a fully open top with no frame in your line of sight. Going the other way, if the budget is tighter, the \u003ca href=\"\/en\/products\/red-sea-reefer-250-g3\"\u003eREEFER 250 G3\u003c\/a\u003e keeps the rimless formula on a 90 cm footprint.\u003c\/p\u003e\n\n\u003ch2\u003eWeight, flooring and clearances\u003c\/h2\u003e\n\u003cp\u003eRed Sea rates the complete system in operation at \u003cstrong\u003e530 kg (1,170 lb)\u003c\/strong\u003e over a 120 cm footprint, and the series manual asks you to confirm the floor under the system is rated for that load before setup. The empty glass tank alone weighs \u003cstrong\u003e64 kg (140 lb)\u003c\/strong\u003e — plan for enough people to lift it onto the cabinet safely.\u003c\/p\u003e\n\u003cp\u003eLeave at least 10 cm (4 in) behind the tank for cables and airflow, and about 60 cm (24 in) clear on one side to reach the back. The cabinet top sits roughly 86 cm (34 in) off the floor. Red Sea recommends a stable room around 22°C (72°F), away from direct sun and HVAC vents.\u003c\/p\u003e\n\n\u003ch2\u003eThe ReefATO+ top-off system, included with the tank\u003c\/h2\u003e\n\u003cp\u003eEvery REEFER G3 ships with the ReefATO+: a level sensor in the pump chamber, temperature probe and leak detection, all connected to the ReefBeat app. It replaces evaporated water automatically and keeps salinity steady between visits. Here is how it installs, filmed at our shop.\u003c\/p\u003e\n\u003cdiv style=\"max-width:340px;margin:20px auto;\"\u003e\n\u003cdiv style=\"position:relative;padding-bottom:177.78%;height:0;overflow:hidden;\"\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/WRicr45EG2k\" title=\"Installing the Red Sea ReefATO+ on a REEFER G3 reef aquarium\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eWhat the ReefATO+ does not include:\u003c\/strong\u003e the reservoir. The series manual states it plainly — REEFER G3 systems ship without a container for top-off water. A jug in the cabinet works, but a \u003ca href=\"\/en\/products\/red-sea-reefcan\"\u003eReefCan\u003c\/a\u003e uses the equipment space better and refills without taking anything apart.\u003c\/p\u003e\n\n\u003ch2\u003eThe setup Red Sea sizes for a 350\u003c\/h2\u003e\n\u003cp\u003eIn its official configurator, this is what the manufacturer identifies as the right sizing for this volume — not our suggestion, their own answer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2 × \u003ca href=\"\/en\/products\/reefled-g2-eclairage-led\"\u003eReefLED G2 115\u003c\/a\u003e — two units, because a 47 in pane will not light evenly under a single fixture\u003c\/li\u003e\n\u003cli\u003e2 × \u003ca href=\"\/en\/products\/red-sea-reefwave%C2%AE-silent-smart-powerful-25\"\u003eReefWave 25\u003c\/a\u003e pumps in opposition for circulation\u003c\/li\u003e\n\u003cli\u003e1 × \u003ca href=\"\/en\/products\/reefrun-g2-dc-pump\"\u003eReefRun G2 6000\u003c\/a\u003e (3,600–6,500 L\/h · 950–1,700 gph) as the return pump — also the model the series manual recommends for the 350\u003c\/li\u003e\n\u003cli\u003e1 × \u003ca href=\"\/en\/products\/red-sea-600dc-reefer-skimmer\"\u003eRSK 600 DC\u003c\/a\u003e, the size Red Sea flags as best for an SPS reef at this volume\u003c\/li\u003e\n\u003cli\u003e1 × \u003ca href=\"\/en\/products\/red-sea-reefmat-fleece-roller-500\"\u003eReefMat 500\u003c\/a\u003e in place of filter socks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNothing forces you to buy it all at once or stay within one brand. But when someone asks what size gear a 350 needs, that list is the manufacturer's own answer.\u003c\/p\u003e\n\n\u003ch2\u003eDownflow, sump and routine maintenance\u003c\/h2\u003e\n\u003cp\u003eSurface water passes the removable combs of the surface skimmer into the overflow box, then drops through a flow-regulated main downpipe backed by a secondary bypass pipe. The precision gate valve on the main downpipe holds the overflow water level between the two intakes: set correctly, it removes the noise of water flowing down to the sump — if you can hear it, it needs adjusting. Here is Red Sea's own walkthrough of that valve.\u003c\/p\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:20px 0;\"\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/KRltaSxVQc4\" title=\"Red Sea ReefGate precision valve on REEFER G3 reef tanks\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003cp\u003eDown in the sump, water runs through the mechanical stage — 225 micron filter bags or media cups, your choice, with at least three sets of bags in rotation recommended. To move to a ReefMat, you pull the filter-bag tray and the removable divider wall without replacing the sump. A bubble-trap labyrinth with a coarse sponge protects the pump chamber, and that constant-level chamber is where the ReefATO+ takes its reading.\u003c\/p\u003e\n\n\u003ch2\u003eIndependent reviews\u003c\/h2\u003e\n\u003cp\u003eTwo independent looks at this exact tank from the Aquarium Butler channel — a first review at setup, then an update after four months of running it:\u003c\/p\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:20px 0;\"\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/JAXaprr5TXE\" title=\"Red Sea REEFER 350 G3 independent review\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:20px 0;\"\u003e\n\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/9wbn1v3b4ts\" title=\"Red Sea REEFER 350 G3 independent update after four months\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eOur advice\u003c\/h2\u003e\n\u003cp\u003eThe REEFER 350 is our biggest seller, and it is not our biggest seller for nothing. It is the right pick when you want room for a real variety of fish while staying reasonable on budget. It will make you happy — and your family too.\u003c\/p\u003e\n\u003cp\u003eThis is a beautiful family hobby: you gather around the aquarium, spend good time together, come by the shop to pick fish as a family. These are the things that bring kids closer to nature, and it is a wonderful education for them — a great pastime that brings everyone together at home.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e— Stéphane, Aquarium ReefSolution\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eBuild the project at your own pace\u003c\/h2\u003e\n\u003cp\u003eNobody buys a complete reef in one order, and that is perfectly normal. Write to us or stop by the shop in Laval with your plan and your budget: we will build the configuration together, putting first what needs to be there from day one. It is part of the service, and it costs nothing.\u003c\/p\u003e\n\n\u003ch2\u003eWarranty\u003c\/h2\u003e\n\u003cp\u003eThe base warranty is 3 years worldwide. Canada is among the countries where registering the system within 90 days of purchase extends coverage to 5 years at no charge. It covers the glass aquarium and the cabinet, applies to the original owner only, and requires proof of purchase. Devices supplied with the system, including the ReefATO+, carry their own warranty.\u003c\/p\u003e\n\n\u003ch2\u003eWhy buy from ReefSolution\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOfficial Red Sea retailer: warranty handled with direct manufacturer support\u003c\/li\u003e\n\u003cli\u003eStore in Laval, QC: REEFER systems assembled and running, to see before you buy\u003c\/li\u003e\n\u003cli\u003eDelivery across Canada. Free shipping available depending on order total.\u003c\/li\u003e\n\u003cli\u003eReal after-sales service, in both languages, from people who run reef tanks at home\u003c\/li\u003e\n\u003cli\u003eAn \u003ca href=\"\/en\/products\/aquaticlife-classic-100-gpd-stage-ro-unit\"\u003eRO\/DI unit\u003c\/a\u003e to make your own water, and a \u003ca href=\"\/en\/products\/red-sea-aquarium-net-cover-24\"\u003enet cover\u003c\/a\u003e if jumpy species are on your stocking list for an open-top tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eHow many gallons is the Red Sea REEFER 350 G3?\u003c\/h3\u003e\n\u003cp\u003e342 L total, which is 90.3 US gallons per Red Sea's official configurator. The display tank alone holds 273 L (72.1 gal US) and the sump 69 L (18.2 gal US).\u003c\/p\u003e\n\n\u003ch3\u003eWhat are the exact dimensions of the REEFER 350 G3?\u003c\/h3\u003e\n\u003cp\u003eThe display tank measures 120 × 50 × 53 cm (47.2 × 19.7 × 20.9 in). With the cabinet, the system stands 140 cm (55.1 in) tall, excluding the light unit.\u003c\/p\u003e\n\n\u003ch3\u003eWhat return pump does a REEFER 350 G3 need?\u003c\/h3\u003e\n\u003cp\u003eThe series manual recommends one ReefRun G2 6000 (3,600–6,500 L\/h · 950–1,700 gph), and the MyREEFER configurator selects the same model for this tank. The return pump is not included with the system.\u003c\/p\u003e\n\n\u003ch3\u003eHow much does a full REEFER 350 G3 weigh?\u003c\/h3\u003e\n\u003cp\u003eRed Sea rates the complete running system at 530 kg (1,170 lb) over a 120 cm footprint, and the manual asks you to confirm floor capacity before setup. The empty glass tank weighs 64 kg (140 lb).\u003c\/p\u003e\n\n\u003ch3\u003eIs the REEFER 350 G3 rimless?\u003c\/h3\u003e\n\u003cp\u003eYes — and it is the largest rimless model in the series. From the 425 up, Red Sea moves to Euro-brace construction. The 350 pairs the 47 in pane with a fully open, frameless top.\u003c\/p\u003e\n\n\u003ch3\u003eHow many lights do I need on a REEFER 350 G3?\u003c\/h3\u003e\n\u003cp\u003eRed Sea specifies two ReefLED G2 115 units for this model, both in its spec table and in its configurator. A single fixture leaves the ends of a 47 in tank under-lit.\u003c\/p\u003e","brand":"Red Sea Reefer","offers":[{"title":"White","offer_id":42824779497643,"sku":"R45140","price":4199.99,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":42824779563179,"sku":"R45139","price":4199.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/product-20250827-a4be552e4aa7a52a71299343d4a76918.png?v=1785258466","url":"https:\/\/reefsolution.com\/en\/products\/red-sea-reefer-350-g3","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}