{"product_id":"red-sea-reefer-300-g3","title":"Red Sea REEFER 300 G3 — Deep Rimless Reef Tank, 300 L on a 90 cm Footprint","description":"\u003ch2\u003eRed Sea Reefer 300 G3 — Depth That Transforms Your Reef\u003c\/h2\u003e\n\n\u003cp\u003eThe Reefer 300 G3 is a complete reef platform built for aquarists short on wall space who refuse to give up \u003cstrong\u003edepth\u003c\/strong\u003e. Its rimless, reinforced ultra-clear glass tank delivers a true three-dimensional reefscape: more relief in your aquascape, more front-to-back swimming room, more freedom to place corals exactly where they belong.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOfficial Red Sea numbers:\u003c\/strong\u003e display tank 90 cm (35.4 in) long × 57.5 cm (22.6 in) deep × 55 cm (21.7 in) high. Total system volume: \u003cstrong\u003e300 L (79.2 US gal)\u003c\/strong\u003e — 246 L (65 US gal) display plus a 54 L (14.3 US gal) REEF-SPEC sump. Total height with cabinet: 142 cm (55.9 in).\u003c\/p\u003e\n\n\u003ch3\u003eThe REEFER G3 Series on Video\u003c\/h3\u003e\n\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:20px 0;\"\u003e\u003ciframe style=\"position:absolute;top:0;left:0;width:100%;height:100%;\" src=\"https:\/\/www.youtube.com\/embed\/ua1FQpOs72s\" frameborder=\"0\" allow=\"autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\n\u003ch3\u003eOfficial Specifications\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eDisplay tank:\u003c\/strong\u003e rimless reinforced ultra-clear glass — 12 mm front, sides and bottom, 10 mm rear. No frame, no brace: an unobstructed view across the entire front and sides.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCabinet:\u003c\/strong\u003e reinforced marine-grade plywood, water-resistant and built for humid environments, with adjustable feet for precise leveling. Complete system height: 142 cm (55.9 in).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eREEF-SPEC sump, 54 L (14.3 US gal):\u003c\/strong\u003e dedicated mechanical filtration and media compartment, skimmer chamber with adjustable water height, micro-bubble trap and a controlled return zone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePre-assembled, glue-free plumbing:\u003c\/strong\u003e silent down-flow regulated by a high-precision gate valve, hydrodynamically improved piping, and an integrated emergency overflow that protects the system if flow ever varies.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReefATO+ Ready:\u003c\/strong\u003e the system is prepared for Red Sea's ReefATO+ auto top-off module. Note: the Red Sea manual states that REEFER G3 systems do not include a reservoir for the top-off water — plan for one separately.\u003c\/p\u003e\n\n\u003ch3\u003e300 vs 250: Same Footprint, More Depth\u003c\/h3\u003e\n\n\u003cp\u003eThe Reefer 300 G3 shares the exact 90 cm (35.4 in) length of the Reefer 250 G3, but adds 7.5 cm of depth and 2 cm of tank height. The payoff: volume climbs from 250 L to 300 L, the aquascape becomes genuinely three-dimensional, and water circulates with fewer dead spots. It fills the gap perfectly between the 250, which some find limiting, and the 350, which needs 120 cm of wall space.\u003c\/p\u003e\n\n\u003ch3\u003eThe Gear We Recommend\u003c\/h3\u003e\n\n\u003cp\u003eRed Sea's lighting recommendation for this model is 2 ReefLED G2 115 units in the DLX configuration — that's our \u003ca href=\"\/en\/products\/reefled-g2-eclairage-led\"\u003eReefLED G2 lineup\u003c\/a\u003e. For circulation, pair a \u003ca href=\"\/en\/products\/reefrun-g2-dc-pump\"\u003eReefRun G2 DC return pump\u003c\/a\u003e with \u003ca href=\"\/en\/products\/red-sea-reefwave%C2%AE-silent-smart-powerful-45\"\u003eReefWave 45\u003c\/a\u003e wave pumps. The \u003ca href=\"\/en\/products\/red-sea-600dc-reefer-skimmer\"\u003eRed Sea 600 DC skimmer\u003c\/a\u003e drops straight into the sump's dedicated chamber, and the \u003ca href=\"\/en\/products\/red-sea-reefmat-fleece-roller-500\"\u003eReefMat 500\u003c\/a\u003e automates mechanical filtration. For auto top-off, add the \u003ca href=\"\/en\/products\/red-sea-reefcan\"\u003eReefCan reservoir\u003c\/a\u003e, and for pure water, an \u003ca href=\"\/en\/products\/aquaticlife-classic-100-gpd-stage-ro-unit\"\u003eAquaticLife 100 GPD RO\/DI unit\u003c\/a\u003e. Finally, the \u003ca href=\"\/en\/products\/red-sea-aquarium-net-cover-24\"\u003e24 in Net Cover\u003c\/a\u003e protects jumping fish — more on that below.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included \/ What to Plan For\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e rimless ultra-clear tank, reinforced marine cabinet, REEF-SPEC sump, silent down-flow system, pre-assembled plumbing with high-precision gate valve, emergency overflow, ReefATO+ preparation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlan for:\u003c\/strong\u003e lighting, return pump, wave pumps, protein skimmer, mechanical filtration, top-off reservoir, RO\/DI unit, salt, substrate and rock.\u003c\/p\u003e\n\n\u003ch3\u003eOur Advice\u003c\/h3\u003e\n\n\u003cp\u003eThe Reefer 300 G3 is the ideal choice when you're short on length but still want real depth. What makes a deep tank special is that beautiful three-dimensional effect. Yes, less length is a compromise for large fish, but you can absolutely build something stunning.\u003c\/p\u003e\n\n\u003cp\u003eMistakes to avoid: always run proper circulation (three pumps minimum), a well-tuned skimmer, and a quiet, properly set down-flow. Just ask us — we can help you find the setup that fits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Net Cover matters.\u003c\/strong\u003e As soon as you keep jumping fish (clownfish, wrasses, firefish…), get a Net Cover. Finding your little fish on the floor in the morning is hard, especially when it's a family hobby and the kids have named them.\u003c\/p\u003e\n\n\u003cp\u003eThe Reefer 300 is for people who don't have the space for a 350 but find the 250 too small. Same length as the 250 (90 cm), with more width and depth — so more three dimensions, more volume for flow, more flexibility. And here at ReefSolution, we're here to help: we can call you, talk it through, and you can drop by the store anytime.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e— Stéphane, Aquarium ReefSolution\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\n\u003cp\u003eREEFER G3 systems carry a standard 3-year worldwide warranty on the glass tank and cabinet. In Canada, register your system at redseafish.com within 90 days of purchase and receive 2 additional years at no charge — 5 years total. Additional equipment (lighting, pumps, skimmer, ReefATO+) carries its own individual warranty.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From ReefSolution?\u003c\/h3\u003e\n\n\u003cp\u003eWhen you buy an aquarium from us, we actually help: we can call you, discuss your project, and you're always welcome at the store in Laval. Installation, equipment choices, flow tuning, coral selection — we're there before and after the sale.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSecure shipping across Canada.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eIs the Reefer 300 G3 better for SPS or LPS corals?\u003c\/h4\u003e\n\u003cp\u003eBoth. With the right lighting and well-planned flow, its 57.5 cm (22.6 in) depth supports a solid SPS reef as well as a mixed SPS\/LPS display. That depth is exactly what gives you the flexibility to place each coral at the right height under the light.\u003c\/p\u003e\n\n\u003ch4\u003eWhich return pump should I choose for the Reefer 300 G3?\u003c\/h4\u003e\n\u003cp\u003eThe ReefRun G2 DC is the natural pick within the Red Sea ecosystem: programmable flow through the ReefBeat app and direct integration into the REEF-SPEC sump. Contact us to confirm the right flow rate for your full setup.\u003c\/p\u003e\n\n\u003ch4\u003eDo I really need a Net Cover on a rimless tank?\u003c\/h4\u003e\n\u003cp\u003eIf you keep jumping fish — and nearly every reefer ends up with one — yes. A rimless tank has no edge to stop a jumper. The 24 in Net Cover trims to size and installs in minutes.\u003c\/p\u003e","brand":"Red Sea Reefer","offers":[{"title":"White","offer_id":43446644736171,"sku":"R45133","price":3899.99,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":43446644768939,"sku":"R45132","price":3899.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/product-20250609-074a1cac4ae4b4278e45760e5bf1f33b.png?v=1785261674","url":"https:\/\/reefsolution.com\/en\/products\/red-sea-reefer-300-g3","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}