{"product_id":"red-sea-reefer-250-g3","title":"Red Sea REEFER 250 G3 — Rimless 65 gal Reef Aquarium on a 35.4 in Footprint","description":"\u003cp\u003eThe \u003cstrong\u003eREEFER 250 G3\u003c\/strong\u003e sits at a very deliberate point in Red Sea's line-up: a 90 cm (35.4 in) front pane, 245 L of total volume, and enough length for fish to actually swim rather than circle. It is the size that settles the argument between the project you want and the space you really have.\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 245 L (65 US gal)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplay tank volume:\u003c\/strong\u003e 203 L (53.6 US gal)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSump volume:\u003c\/strong\u003e 42 L (11.1 US gal)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDisplay tank (L × W × H):\u003c\/strong\u003e 90 × 50 × 53 cm (35.4 × 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 12 mm (0.5 in) · bottom 12 mm (0.5 in) · back 10 mm (0.4 in)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRim type:\u003c\/strong\u003e rimless, no internal brace, bevelled edges\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCabinet:\u003c\/strong\u003e marine-grade plywood on adjustable feet, white or black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTwo corrections against figures circulating elsewhere: the tank is 90 cm long, not 100, and the display volume is 203 L. Everything above comes from the specification table published by the manufacturer and from its MyREEFER tool, both read while this page was being built.\u003c\/p\u003e\n\n\u003ch2\u003eHow the 250 differs from the 200\u003c\/h2\u003e\n\u003cp\u003eBoth share a cabinet height, a 42 L sump and the same recommended return pump. Geometry is what separates them: the \u003ca href=\"\/en\/products\/red-sea-reefer-200-g3\"\u003eREEFER 200 G3\u003c\/a\u003e is a deep 60 cm square, while the 250 stretches to 90 cm across at only 50 cm deep. For a similar volume the 250 gives a more panoramic view, an easier aquascape to compose, and a genuine swimming lane. That geometry is also why Red Sea specifies two light units on the 250 against one on the 200.\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 high precision valve on the 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\n\u003ch2\u003eWeight, floors and clearances\u003c\/h2\u003e\n\u003cp\u003eRed Sea rates the running system at \u003cstrong\u003e380 kg (838 lb)\u003c\/strong\u003e spread over a 90 cm footprint. The empty tank on its own weighs \u003cstrong\u003e55 kg (121 lb)\u003c\/strong\u003e: a two-person lift at minimum, and both of them need to be able to finish the carry.\u003c\/p\u003e\n\u003cp\u003eAllow at least 10 cm (3.9 in) between wall and tank for cabling and airflow, plus roughly 60 cm (23.6 in) clear on each side so you can reach behind when work is needed. The cabinet top lands about 86 cm (33.9 in) above the floor. Red Sea suggests holding the room near 22 °C (71.6 °F), away from direct sunlight and air-conditioning vents.\u003c\/p\u003e\n\n\u003ch2\u003eThe ReefATO+ comes with the tank\u003c\/h2\u003e\n\u003cp\u003eEvery REEFER G3 ships with the ReefATO+: level sensor, temperature probe and leak detector, all reporting to the ReefBeat app. It replaces evaporated water and stops salinity from creeping up between visits. Here is the install, filmed at our store.\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 250 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 bring:\u003c\/strong\u003e the reservoir. REEFER G3 systems ship without any top-off water container — the series manual states it outright. So it needs a source: a jug in the cabinet works, while a \u003ca href=\"\/en\/products\/red-sea-reefcan\"\u003eReefCan 18 or 40\u003c\/a\u003e uses the available space better and refills without dismantling half the stand.\u003c\/p\u003e\n\n\u003ch2\u003eThe build Red Sea itself puts on a 250\u003c\/h2\u003e\n\u003cp\u003eThe factory-assembled REEFER MAX 250 G3 contains exactly this — the manufacturer's own sizing for this volume, not a shop suggestion:\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 90 cm of front glass does not light evenly from one\u003c\/li\u003e\n\u003cli\u003e2 × \u003ca href=\"\/en\/products\/red-sea-reefwave%C2%AE-silent-smart-powerful-25\"\u003eReefWave 25\u003c\/a\u003e (7,500 L\/h · 1,981 gph each), mounted opposing\u003c\/li\u003e\n\u003cli\u003e1 × \u003ca href=\"\/en\/products\/reefrun-g2-dc-pump\"\u003eReefRun G2 4000\u003c\/a\u003e (2,000–4,000 L\/h · 530–1,060 gph) as the return pump\u003c\/li\u003e\n\u003cli\u003e1 × \u003ca href=\"\/en\/products\/red-sea-300dc-reefer-skimmer\"\u003eRSK 300 DC\u003c\/a\u003e (water 1,000 L\/h · 264 gph, air 500 L\/h · 132 gph)\u003c\/li\u003e\n\u003cli\u003e1 × \u003ca href=\"\/en\/products\/red-sea-reefmat-250\"\u003eReefMat 250\u003c\/a\u003e in place of the filter sock drawer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo obligation to buy it all at once, and none to stay inside one brand. But when someone asks what size they need, that list is the manufacturer's answer.\u003c\/p\u003e\n\n\u003ch2\u003eTwo independent owner videos\u003c\/h2\u003e\n\u003cp\u003eThese two come from an independent hobbyist channel, not from Red Sea and not from us — an unboxing and build, then a full update two months in on the same tank. They are the closest thing to seeing the system in a real home before you buy one.\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\/y3JOPk6njvI\" title=\"Red Sea REEFER 250 G3 reef aquarium unboxing and setup — independent owner video\" 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\/EiMTvZ_tZww\" title=\"Red Sea REEFER 250 G3 two month update and review — independent owner video\" 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\u003eDownflow, sump and routine upkeep\u003c\/h2\u003e\n\u003cp\u003eSurface water leaves through removable combs into the overflow chamber, then drops through a main pipe metered by the \u003cstrong\u003eReefGate\u003c\/strong\u003e, the high-precision valve fitted as standard on G3 systems. A second pipe serves as the safety line. Dialled in, the downflow runs very quietly; left rough, it sings. Red Sea also widened the pipe inlet into a rectangle, which breaks up the turbulence that causes the noise, and claims up to 50% more circulation on the G3 generation thanks to the new pipework.\u003c\/p\u003e\n\u003cp\u003eBelow, water passes the mechanical filtration module — 225 micron socks or media cups. Red Sea suggests three sets of socks in rotation, which keeps washing off the critical path. The whole module pulls out to accept a ReefMat with no sump modification. A baffle and sponge trap bubbles ahead of the return pump, and it is that constant-level chamber the ReefATO+ measures.\u003c\/p\u003e\n\n\u003ch2\u003eOur advice\u003c\/h2\u003e\n\u003cp\u003eThe REEFER 250 is a strong seller, and it is not a strong seller by accident. It is the right compromise: enough room to keep a wider variety of fish while staying reasonable on budget. These tanks are easy to handle, they do not eat the room, and the weight stays manageable — it works on most floors.\u003c\/p\u003e\n\u003cp\u003eThen there is the side of it people talk about less. This is a beautiful family hobby. Everyone gathers around the tank, you spend good time together, you come down to the store and pick fish as a family. Those are the things that bring children closer to nature, and it is a wonderful education for them. A tank like this one will make you and your family happy — it is a fine way to bring everybody together at home.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e— Stéphane, Aquarium ReefSolution\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eBuilding the project at your own pace\u003c\/h2\u003e\n\u003cp\u003eNobody buys a complete reef in a single order, and that is entirely normal. Write to us or come to the Laval store with your project and your budget: we set out the configuration that suits you, prioritising what has to be there on day one and letting the rest follow later. It is part of the service, and it costs nothing.\u003c\/p\u003e\n\n\u003ch2\u003eWarranty\u003c\/h2\u003e\n\u003cp\u003eBase coverage runs 3 years worldwide. Canada is among the countries where registering within 90 days of purchase extends it to 5 years at no cost. It covers the glass tank and the cabinet, applies to the first owner only, and requires proof of purchase. Devices supplied with the system, including the ReefATO+, fall under 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 claims handled with direct factory support\u003c\/li\u003e\n\u003cli\u003eStore in Laval, Quebec: REEFER systems set up and running, to see before you buy\u003c\/li\u003e\n\u003cli\u003eShipping across Canada. Free shipping available depending on order value.\u003c\/li\u003e\n\u003cli\u003eReal after-sales help, in both languages, from people who run reef tanks themselves\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 at home, and a \u003ca href=\"\/en\/products\/red-sea-aquarium-net-cover-24\"\u003enet cover\u003c\/a\u003e if jumpers are on your stock 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 250 G3?\u003c\/h3\u003e\n\u003cp\u003e245 L for the complete system, or 65 US gallons according to Red Sea's own configurator. The display tank alone holds 203 L (53.6 US gal) and the sump 42 L (11.1 US gal).\u003c\/p\u003e\n\n\u003ch3\u003eWhat are the exact dimensions of the REEFER 250 G3?\u003c\/h3\u003e\n\u003cp\u003eThe tank measures 90 × 50 × 53 cm (35.4 × 19.7 × 20.9 in). With the cabinet, the whole system stands 140 cm (55.1 in) tall, before adding a light unit.\u003c\/p\u003e\n\n\u003ch3\u003eHow many lights does a REEFER 250 G3 need?\u003c\/h3\u003e\n\u003cp\u003eRed Sea specifies two ReefLED G2 115 units for this model, and that is what goes into its own REEFER MAX 250 G3. A single fixture leaves the ends of a 90 cm front pane underlit.\u003c\/p\u003e\n\n\u003ch3\u003eIs a REEFER 250 G3 a good reef tank for a family?\u003c\/h3\u003e\n\u003cp\u003eIt is one of the most popular sizes for exactly that. The volume supports a varied population without turning into an expert-only project, and routine upkeep is easy to share. Read our advice above — it is the question we field most often in store.\u003c\/p\u003e\n\n\u003ch3\u003eHow much does a REEFER 250 G3 weigh when full?\u003c\/h3\u003e\n\u003cp\u003eRed Sea rates the complete running system at 380 kg (838 lb) over a 90 cm footprint. The empty tank on its own is 55 kg (121 lb).\u003c\/p\u003e\n\n\u003ch3\u003eShould I buy the 200 or the 250?\u003c\/h3\u003e\n\u003cp\u003eIt is a question of shape as much as volume. The \u003ca href=\"\/en\/products\/red-sea-reefer-200-g3\"\u003e200 G3\u003c\/a\u003e is deeper and narrower; the 250 is longer and shallower. The 250 adds 45 L and a 90 cm front pane, which changes both the aquascape and how the fish use the space.\u003c\/p\u003e\n","brand":"Red Sea Reefer","offers":[{"title":"White","offer_id":42824772747435,"sku":"R45126","price":3599.99,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":42824772780203,"sku":"R45125","price":3599.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/product-20250608-e6a31dc1b44722e105a3d5bed958a33a.png?v=1785122403","url":"https:\/\/reefsolution.com\/en\/products\/red-sea-reefer-250-g3","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}