{"product_id":"red-sea-reefer-g3-deluxe-aquarium-system-300","title":"Red Sea REEFER G3 DELUXE Aquarium System 300","description":"\u003cp\u003e\u003cstrong\u003eThe largest tank in the standard G3 range, before you move up to an S-series system.\u003c\/strong\u003e The Red Sea REEFER G3 Deluxe Aquarium System 300 is a 301 L rimless reef system — a 247 L display over a 57 L sump — with two ReefLED G2 115 fixtures and mounting arms included, plus Red Sea's built-in ReefATO+ auto top-off. It shares its 89.9 cm length with the 250 but is deeper front-to-back, with the largest sump in the G3 170–300 range for the most filtration and dosing headroom of the four.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e301 L total, on an 89.9 × 57.4 cm footprint\u003c\/strong\u003e — a 247 L rimless display over a 57 L sump, the largest sump in the 170–300 line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 × ReefLED G2 115 fixtures and mounting arms included\u003c\/strong\u003e — 115 W each, roughly 500 PAR at the surface falling to around 150 PAR at 50 cm, tunable white spectrum, rated to 60 cm maximum water depth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReefATO+ built in\u003c\/strong\u003e — automatic top-off with a titanium water-level sensor, integrated thermometer and leak detection, standard on every G3 model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedesigned G3 sump\u003c\/strong\u003e — REEF-SPEC, ReefMat-ready, with a dedicated skimmer chamber and a bubble-trap labyrinth ahead of the pump draw.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRimless, ultra-clear glass\u003c\/strong\u003e — beveled-edge front panel along the full 89.9 cm length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-glued sump plumbing\u003c\/strong\u003e — the downpipe, return line and ReefGate flow valve arrive assembled.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eREEFER G3 300 rimless display aquarium\u003c\/li\u003e\n\u003cli\u003eMarine-spec cabinet in your choice of black or white\u003c\/li\u003e\n\u003cli\u003eREEF-SPEC glass sump with pre-glued plumbing and ReefGate flow valve\u003c\/li\u003e\n\u003cli\u003e2 × ReefLED G2 115 LED fixtures with mounting arms\u003c\/li\u003e\n\u003cli\u003eReefATO+ automatic top-off system, with water-level sensor, thermometer and leak detector\u003c\/li\u003e\n\u003cli\u003eMechanical filtration media (filter socks and media cups)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e return pump, protein skimmer, heater, the ReefMat fleece filter itself (the sump is only pre-fitted to accept one), any additional controller hub, and aquascaping rock, sand or livestock.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay dimensions (L × W × H)\u003c\/th\u003e\n\u003ctd\u003e89.9 × 57.4 × 55.1 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGlass\u003c\/th\u003e\n\u003ctd\u003eRimless, ultra-clear — approx. 12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay volume\u003c\/th\u003e\n\u003ctd\u003e247 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSump volume\u003c\/th\u003e\n\u003ctd\u003e57 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal system volume\u003c\/th\u003e\n\u003ctd\u003e301 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall height (cabinet + tank)\u003c\/th\u003e\n\u003ctd\u003e142.0 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCabinet colours\u003c\/th\u003e\n\u003ctd\u003eBlack or white\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAquarium weight (glass only)\u003c\/th\u003e\n\u003ctd\u003e58 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilled system weight (water only)\u003c\/th\u003e\n\u003ctd\u003eApprox. 470 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded lighting\u003c\/th\u003e\n\u003ctd\u003e2 × Red Sea ReefLED G2 115, 115 W each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eMarine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGeneration\u003c\/th\u003e\n\u003ctd\u003eG3 (current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eFloor loading:\u003c\/strong\u003e at approximately 470 kg filled with water alone — before aquascaping rock, sand or livestock — this is a load-bearing consideration on any floor above ground level. Add your own estimated rock and sand weight on top of this figure, and have a qualified professional confirm the floor can carry it before installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhich REEFER G3 do I need?\u003c\/h3\u003e\n\u003cp\u003eAll four current REEFER G3 sizes share the same sump architecture, ReefGate valve and ReefATO+ system — the differences are footprint, volume, and how many ReefLED G2 115 fixtures the Deluxe package includes.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eFootprint (L × W)\u003c\/th\u003e\n\u003cth\u003eDisplay \/ overall height\u003c\/th\u003e\n\u003cth\u003eDisplay volume\u003c\/th\u003e\n\u003cth\u003eTotal volume\u003c\/th\u003e\n\u003cth\u003eSump volume\u003c\/th\u003e\n\u003cth\u003eReefLED included (Deluxe)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eREEFER G3 170\u003c\/th\u003e\n\u003ctd\u003e59.9 × 50.0 cm\u003c\/td\u003e\n\u003ctd\u003e51.1 cm \/ 136.9 cm\u003c\/td\u003e\n\u003ctd\u003e128 L\u003c\/td\u003e\n\u003ctd\u003e165 L\u003c\/td\u003e\n\u003ctd\u003e37 L\u003c\/td\u003e\n\u003ctd\u003e1 × ReefLED G2 115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eREEFER G3 200\u003c\/th\u003e\n\u003ctd\u003e59.9 × 57.4 cm\u003c\/td\u003e\n\u003ctd\u003e53.1 cm \/ 140.0 cm\u003c\/td\u003e\n\u003ctd\u003e158 L\u003c\/td\u003e\n\u003ctd\u003e200 L\u003c\/td\u003e\n\u003ctd\u003e42 L\u003c\/td\u003e\n\u003ctd\u003e1 × ReefLED G2 115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eREEFER G3 250\u003c\/th\u003e\n\u003ctd\u003e89.9 × 50.0 cm\u003c\/td\u003e\n\u003ctd\u003e53.1 cm \/ 140.0 cm\u003c\/td\u003e\n\u003ctd\u003e203 L\u003c\/td\u003e\n\u003ctd\u003e245 L\u003c\/td\u003e\n\u003ctd\u003e42 L\u003c\/td\u003e\n\u003ctd\u003e2 × ReefLED G2 115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eREEFER G3 300\u003c\/th\u003e\n\u003ctd\u003e89.9 × 57.4 cm\u003c\/td\u003e\n\u003ctd\u003e55.1 cm \/ 142.0 cm\u003c\/td\u003e\n\u003ctd\u003e247 L\u003c\/td\u003e\n\u003ctd\u003e301 L\u003c\/td\u003e\n\u003ctd\u003e57 L\u003c\/td\u003e\n\u003ctd\u003e2 × ReefLED G2 115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe 300 shares its 89.9 cm length with the 250 but is 7.4 cm deeper, with a 15 L larger sump and 56 L more total volume — the same footprint on the floor, more water and filtration behind it. Beyond the 300, the next step up in Red Sea's range is the S-series (including the S-700 we also stock), which moves to a substantially larger footprint rather than a further increment on this one.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e a reefer who can commit 89.9 × 57.4 cm of floor space and wants the largest sump and water volume available in the 170–300 G3 range, with lighting already covering the full span.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e an install on an unconfirmed suspended floor — check the load rating first — or anyone expecting a plug-and-play kit; a return pump and, if wanted, a skimmer or ReefMat are still separate purchases.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRinse or replace the sump's micron filter socks weekly, more often while cycling. Keep both ReefLED fan intakes free of salt dust. Wipe the ReefATO+ sensor periodically to prevent salt creep causing false top-off readings.\u003c\/p\u003e\n\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eRun both ReefLED fixtures, the ATO pump and any added equipment on 240 V AU-approved supplies with an RCD, with mains connections above the water line and a drip loop. See the floor-loading note above before installing.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reefrun-g2-8000-dc-pump-w-o-controller\"\u003eRed Sea ReefRun G2 8000 DC Pump\u003c\/a\u003e or \u003ca href=\"\/products\/red-sea-reefrun-g2-12000-dc-pump-w-o-controller\"\u003eRed Sea ReefRun G2 12000 DC Pump\u003c\/a\u003e — return pump options for a 300-class sump.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reefer-dc-skimmer-600-w-o-controller\"\u003eRed Sea Reefer DC Skimmer 600\u003c\/a\u003e — sized for the 300's skimmer chamber and bioload.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reefmat-filter-500\"\u003eRed Sea ReefMat Filter 500\u003c\/a\u003e — drops into the ReefMat-ready sump chamber, sized for the larger 57 L sump.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-reefled-90-g2-115-universal-mounting-arm\"\u003eRed Sea ReefLED 90\/G2 115 Universal Mounting Arm\u003c\/a\u003e — for a third fixture if you want tighter PAR uniformity across the full length.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-coral-pro-salt-20kg-refill-box-600ltr\"\u003eRed Sea Coral Pro Salt, 20 kg refill\u003c\/a\u003e — for the initial fill and ongoing water changes on a 301 L system.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/red-sea-seawater-refractometer\"\u003eRed Sea Seawater Refractometer\u003c\/a\u003e — check salinity before any new mix goes in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eRed Sea covers the aquarium and cabinet for 36 months from purchase, extendable to 5 years total at no cost if you register within 90 days — Australia is an eligible market. The extension covers the structural integrity of the glass and cabinet only; the ReefLED fixtures and ReefATO+ carry their own 24-month manufacturer warranty. These terms sit in addition to your rights under the Australian Consumer Law, which are not limited or excluded by them. As a large glass and cabinet item, this ships as a freight delivery — confirm access and unloading arrangements with us before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow much does the filled system weigh, and is that a floor-loading concern?\u003c\/h4\u003e\n\u003cp\u003eApproximately 470 kg with water alone, before rock, sand or livestock. On a suspended or upper floor, get the load confirmed by a qualified professional before installing.\u003c\/p\u003e\n\u003ch4\u003eDoes the REEFER G3 Deluxe 300 include a return pump?\u003c\/h4\u003e\n\u003cp\u003eNo. A ReefRun G2 8000 or 12000 DC pump, sold separately, suits this sump size.\u003c\/p\u003e\n\u003ch4\u003eWhat's the difference between the 300 and the 250?\u003c\/h4\u003e\n\u003cp\u003eSame 89.9 cm length. The 300 is 7.4 cm deeper, with a 15 L larger sump and 56 L more total volume — the largest of the two.\u003c\/p\u003e\n\u003ch4\u003eIs the auto top-off included?\u003c\/h4\u003e\n\u003cp\u003eYes. ReefATO+ ships standard on every REEFER G3 model, including this one. You'll still need your own top-up water reservoir.\u003c\/p\u003e\n\u003ch4\u003eIs there anything bigger than the 300 in the standard REEFER G3 line?\u003c\/h4\u003e\n\u003cp\u003eNot on the same footprint. The next step up is Red Sea's S-series — including the REEFER G3 S-700 we also stock — which is a substantially larger, differently proportioned system rather than a bigger version of the 300.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default","offer_id":55269640241443,"sku":null,"price":4510.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Red-Sea-REEFER-G3-DELUXE-Aquarium-System-300-Black-inside.jpg?v=1782107614","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/red-sea-reefer-g3-deluxe-aquarium-system-300","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}