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A perfect foundation for any thriving reef aquarium
New & improved water management
Extra-fortified tank & cabinet
Integrated smart ATO system
REEFER G3 systems come with hydrodynamically superior water management, extra-fortified cabinets & aquariums, REEF-SPEC sumps with full high-performance capabilities, integrated smart ATO systems and an extended warranty of up to 5 years. They are the ideal platform for the full Red Sea Experience, combining our smart devices into one synchronized ecosystem operated via the ReefBeat App.
Reinforced ultra-clear glass
REEFER G3 aquariums are constructed from beveled edge ultra-clear glass with increased thickness of up to 19mm. REEFER models above 400 liters. are eurobraced for extra strength.
Fortified plywood cabinet
REEFER G3 aquariums are mounted on marine-spec plywood cabinets with leveling feet, with REEFER 525 models and above further reinforced with front aluminum supports.
Pump return outlets
All REEFER models now benefit from hydrodynamically superior pipping for improved water distribution. REEFER 350 and above have dual 25mm diameter return pump outlets, while REEFER 750 and above have 32mm diameter dual outlets. All models with dual outlets can be connected to single or dual return pumps.
Surface skimmer
The piping is hidden inside a large central overflow box, which has a large surface skimmer with removable comb parts, for easy cleaning.
Silent downflow system
The large downflow pipes reduce turbulence, meaning a quieter flow, and have been redesigned with a rectangular profile, enhancing the circulation.
ReefGate high-precision flow valve
All REEFER G3s include the new ReefGate, high-precision bespoke gate valve on the downflow pipe, allowing for easy regulation of the flow and a near silent operation.
Hydrodynamically superior piping
All models come with hydrodynamically superior piping that ensures a powerful flow throughout the system.
Reef Spec sump
The Reef Spec sumps are ReefMat and Refugium-ready, and come with an integrated smart ATO module. The sumps also have an adjustable-height skimmer chamber, removable micron filter bags and media cups, and a bubble trap to prevent air bubbles from returning to the aquarium.
ReefMat-ready
The easily removable mechanical filtration compartment allows for a quick Plug & Play installation of the ReefMat 250/500/1200.
ReefATO module
All models come with the ReefBeat App-controlled ReefATO+ system, which keeps your water volume and salinity stable, and includes an accurate temperature monitor as well as a highly sensitive leak detector.
Chiller & hardware chamber
Most models come with an additional chamber that can be used for a chiller, controllers and other equipment.
Next-level flow, Eurobraced strength
Red Sea's REEFER G3's benefit from a fully redesigned flow system and new hydrodynamically superior piping, delivering up to 50% more water circulation while significantly reducing energy consumption. Models 425 and above now feature euro-bracing for extra strength and durability.
REEFER 170 G3
REEFER 200 G3
REEFER 250 G3
REEFER 300 G3
Total system water volume
165 L
200 L
245 L
300 L
Display tank water vol.
128 L
158 L
203 L
246 L
In-Cabinet sump water vol.
37 L
42 L
42 L
54 L
Display tank Length
60 cm
60 cm
90 cm
90 cm
Display tank width
50 cm
57.5 cm
50 cm
57.5 cm
Display tank height (excluding light unit)
51 cm
53 cm
53 cm
55 cm
Total system height (excluding light unit)
137 cm
140 cm
140 cm
142 cm
Ultra-clear front glass
10 mm
10 mm
12 mm
12 mm
Ultra-clear side glass
12 mm
12 mm
12 mm
12 mm
Bottom glass
10 mm
10 mm
12 mm
12 mm
Back glass thickness
8 mm
8 mm
10 mm
10 mm
Rim type
Rimless
Rimless
Rimless
Rimless
ReefLED advanced light system
DLX Version 1 Unit (RL G2 115) (optional)
DLX Version 1 Unit (RL G2 115) (optional)
DLX Version 2 Units (RL G2 115) (optional)
DLX Version 2 Units (RL G2 115) (optional)
Water circulation
Not included
Not included
Not included
Not included
Main system pump
Not included
Not included
Not included
Not included
Hydrodynamic piping with Gate valve
Included
Included
Included
Included
Protein Skimmer
Not included
Not included
Not included
Not included
ReefMat / NanoMat
Not included
Not included
Not included
Not included
ReefATO+ kit included
Included
Included
Included
Included
ReefATO+ Ready
ReefATO+ Ready (included)
ReefATO+ Ready (included)
ReefATO+ Ready (included)
ReefATO+ Ready (included)
Slide out control panel
Not included
Not included
Not included
Not included
REEFER 350 G3
REEFER 425 G3
REEFER 525 G3
REEFER 625 G3
Total system water volume
342 L
433 L
540 L
620 L
Display tank water vol.
273 L
343 L
423 L
497 L
In-Cabinet sump water vol.
69 L
90 L
116 L
123 L
Display tank Length
120 cm
120 cm
150 cm
150 cm
Display tank width
50 cm
60 cm
60 cm
65 cm
Display tank height (excluding light unit)
53 cm
55 cm
55 cm
60 cm
Total system height (excluding light unit)
140 cm
142 cm
142 cm
148 cm
Ultra-clear front glass
12 mm
12 mm
15 mm
19 mm
Ultra-clear side glass
15 mm
15 mm
15 mm
19 mm
Bottom glass
12 mm
12 mm
15 mm
15 mm
Back glass thickness
12 mm
12 mm
15 mm
19 mm
Rim type
Rimless
Euro brace
Euro brace
Euro brace
ReefLED advanced light system
DLX Version 2 Units (RL G2 115) (optional)
DLX Version 2xRL G2 115 or 2xRL G2 170 (optional)
DLX Version 3xRL G2 115 or 2xRL G2 170 (optional)
DLX Version 3xRL G2 115 or 2xRL G2 170 (optional)
Water circulation
Not included
Not included
Not included
Not included
Main system pump
Not included
Not included
Not included
Not included
Hydrodynamic piping with Gate valve
Included
Included
Included
Included
Protein Skimmer
Not included
Not included
Not included
Not included
ReefMat / NanoMat
Not included
Not included
Not included
Not included
ReefATO+ kit included
Included
Included
Included
Included
ReefATO+ Ready
ReefATO+ Ready (included)
ReefATO+ Ready (included)
ReefATO+ Ready (included)
ReefATO+ Ready (included)
Slide out control panel
Not included
Not included
Not included
Not included
REEFER 750 G3
Total system water volume
750 L
Display tank water vol.
600 L
In-Cabinet sump water vol.
150 L
Display tank Length
180 cm
Display tank width
65 cm
Display tank height (excluding light unit)
60 cm
Total system height (excluding light unit)
148 cm
Ultra-clear front glass
19 mm
Ultra-clear side glass
19 mm
Bottom glass
19 mm
Back glass thickness
19 mm
Rim type
Euro brace
ReefLED advanced light system
DLX Version 4xRL G2 115 or 3xRL G2 170 (optional)
Water circulation
Not included
Main system pump
Not included
Hydrodynamic piping with Gate valve
Included
Protein Skimmer
Not included
ReefMat / NanoMat
Not included
ReefATO+ kit included
Not included
ReefATO+ Ready
ReefATO+ Ready (included)
Slide out control panel
Not included
3 Years Standard Warranty +2 upon registration with Red Sea.
Can it be mounted on suction cups and are there cut outs on the filter case to install these by?
No, the M Bioflow does not have any suction cups to hold the filter to the aquarium. There are no holes on the filter designed to hold such suction clips.
Payment Methods
We accept all major Credit and Debit cards, and these are processed via a third party payment gateway called Opayo.
We also accept payments via PayPal, PayPal credit, Clearpay and Klarna which are both pay in 4 interest-free instalments.
Also, you can pay using Android and Apple Pay if you are using a compatible device.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security
When speaking to one of our team, we will never ask you for your bank details, passwords or any private information. We will only ever ask for your order number followed by either your postcode, email address or phone number to verify we are talking to the person named on the account.
When creating an account on our website, we ask that you use a unique password, this will help keep all your online accounts safe. If you are visiting our website via a smartphone we suggest you use the strong password and store it securely on your phone.
Our website is run on Visual Soft, which means all your data is stored securely on their servers.
Next Day Shipping cut off is at Noon/12:00pm
Orders after that time will be processed the next working day
Please Note: Certain ponds, aquariums, all pond plants, and all livestock are excluded from free delivery.
The blue highlighted area on the map below is where we deliver on our own vehicle. Unfortunately, if you are not in one of these postcode zones we are unable to deliver certain items such as plants, small glass items and selective other products.
We offer a few different delivery options depending on the size and value of your order.
Certain orders over £50 qualify for free mainland UK (excludes Northern Ireland, Pond Plants, and livestock) delivery which will arrive within 3-5 working days of the order being processed.
Orders Below £50 in Mainland UK will be charged a standard delivery fee of £5.99.
Pond Plant and Tropical/Marine/Pond Livestock will be charged a delivery fee of £19.99.
Additional Shipping Charges
For any orders that do not include Aquariums, the below is charged:
Next Working Day Parcel Delivery to Mainland UK - £7.99 OR £2.99 if the order is over £50 (excludes Northern Ireland)
Standard Parcel Delivery to Northern Ireland £8.99
Standard Parcel Delivery to Scottish Highlands & Islands £9.99
Standard Parcel Delivery to Jersey & Guernsey £12.99
For all Aquarium, Medium - Extra Large Terrarium/Vivarium/Paludarium deliveries (Excluding biOrbs & Smaller Aquariums), the below is charged:
You must be present for delivery and please check your item before signing for delivery.
A payment link will be sent to you if redelivery is required.
Next Working Day Pallet Delivery - £20
2 Hour Booking Slot Pallet Delivery - £20
Pallet Delivery to Northern Ireland - £45
Saturday and OptiClear 90 & 120 Delivery - £60
Pallet Delivery to Isle of Wight (PO30 and Above) and Scottish Highlands (AB, PH, IV1-36, IV, KW1-14, KY, PA21-41) - £45
Pallet Delivery to the Scottish Isles (KA27-28, PA60-90, ZE, JE, GY, IM, IV40-56, KW15-17, PH42-44, PA20, PA42-49) - £120
Pallet Delivery to Outer Hebrides (HS) - £140
Pond's over 1000 litres will be a curb side pallet delivery.
Aquariums over 125 litre will be a curb side pallet delivery.