Red Sea Reef-Frame MAX 250 Aquarium & Cabinet

The Red Sea REEF-FRAME MAX 250 Marine Aquarium is a complete reef aquarium system combining a 204 litre display tank with a 42 litre in-cabinet sump, providing a manufacturer-rated total system water volume of 246 litres. Its 90 x 53 x 50 cm display provides space for creating a marine aquascape with live rock, corals and suitable marine fish. Part of the REEF-FRAME range, the MAX 250 combines the aquarium, reinforced cabinet, filtration sump and plumbing with a matched package of lighting, circulation, filtration and aquarium monitoring equipment.

The REEF-FRAME range brings together ultra-clear glass construction, eurobracing and marine-spec plywood cabinets designed to support the full contour of the aquarium. The MAX 250 provides a comprehensive starting point for a reef system, with the main equipment selected for the aquarium's size and filtration arrangement. Its 90 cm display length offers room for arranging rockwork, coral colonies and swimming areas, while the in-cabinet sump keeps the main filtration equipment beneath the display.

The display aquarium measures 90 cm long, 53 cm wide and 50 cm high, providing a defined space for arranging rockwork and coral placement. The ultra-clear front glass is 12 mm thick, the side panels are 12 mm thick, the bottom glass is 12 mm thick and the back glass is 10 mm thick. Eurobracing reinforces the upper perimeter of the aquarium, while high-quality euro-silicone bonds the glass panels for long-term structural integrity.

The aquarium is supported by a marine-spec plywood cabinet designed to support the full contour of the glass structure. Adjustable levelling feet allow the cabinet to be positioned correctly during installation. The REEF-FRAME cabinet range is available in black, white and classic oak finishes, allowing the aquarium to be selected to suit different interiors.

The REEF-FRAME MAX 250 features a central overflow box that conceals the aquarium plumbing. A large surface skimmer with removable comb sections collects water from the display and provides convenient access for routine cleaning. Enlarged downflow pipes and a rectangular flow profile are designed to reduce turbulence and support quieter water movement through the system.

The ReefGate high-precision gate valve allows accurate regulation of water flowing from the display into the sump. Adjusting the valve helps balance the downflow against the return pump, reducing operating noise. Hydrodynamic piping supports efficient water circulation, while optional metric and USA connector kits allow compatible plumbing modifications.

A single 25 mm curved return outlet directs water back into the display aquarium. The MAX package includes one ReefRun G2 4000 return pump, providing adjustable flow between 2,000 and 4,000 litres per hour, a maximum head height of 3.4 metres and power consumption of 16–38 W. The pump includes local flow control, with ReefBeat integration available through a compatible ReefRun Dual Controller.

The integrated 42 litre Reef Spec sump provides dedicated space for mechanical filtration, protein skimming and the return pump. Its skimmer chamber has an adjustable operating water height, allowing the level to be set according to the requirements of the supplied protein skimmer. A bubble trap helps prevent air bubbles from returning to the display, while the removable mechanical filtration compartment allows convenient installation of a compatible ReefMat automatic roller filter. An optional sump divider can also be used to create a dedicated refugium chamber.

The MAX 250 includes one ReefMat 250 automatic roller filter, rated for aquarium systems up to 250 litres. It has a maximum flow capacity of 3,500 litres per hour and uses an 8 cm wide fleece roll measuring 32 metres in length. The unit measures 16 x 20 x 49 cm and automatically advances the fleece as it collects waste. ReefBeat connectivity provides filter usage monitoring and replacement notifications, helping simplify routine mechanical filtration maintenance.

Lighting is provided by two ReefLED G2 115 units with mounting arms. Each light features a 115 W LED array, providing a combined rated lighting power of 230 W. The lights offer an adjustable 10,000–23,000 K spectrum and a separate 3 W moonlight channel per unit. Published lighting performance figures include PAR values of 500 at the water surface and 150 at a depth of 50 cm. ReefBeat control allows customised lighting schedules, acclimation programmes and lunar cycles, providing flexibility when setting lighting conditions for the aquarium's inhabitants.

Water movement is supported by two ReefWave 25 circulation pumps, each providing a maximum flow rate of 7,500 litres per hour with power consumption of 4–25 W. The pumps are recommended for aquariums measuring 45–120 cm in length and are compatible with glass up to 15 mm thick. Each pump has a 3 metre cable, providing flexibility when positioning the pumps and routing their power connections.

The supplied REEFER DC 300 protein skimmer removes dissolved organic waste from aquarium water. It features a water flow rate of 1,000 litres per hour, an air intake of 500 litres per hour, power consumption of 20 W and an overall height of 53 cm. The skimmer uses a Sicce PSK DC-1200 pump and includes automatic self-levelling, foam-wetness monitoring and collection-cup waste-level monitoring to support consistent operation.

The REEF-FRAME MAX 250 includes ReefControl Pro with a pH/temperature probe and a ReefControl automatic top-up (ATO) module. ReefControl Pro supports up to seven compatible digital ReefSense probes or sensors, providing live readings, historical logs and notifications. The supplied probe provides temperature-compensated pH measurement with a stated accuracy of 0.05 pH and precision of 0.01 pH, alongside temperature measurement accurate to 0.05°C.

The ReefControl ATO module uses solid-state water-level detection to identify evaporation losses and activate freshwater replacement. Its integrated temperature sensor has a stated accuracy of 0.1°C. The supplied ATO pump provides a maximum flow rate of 300 litres per hour, a maximum head height of 2.5 metres and power consumption of 6–10 W. An installation kit includes the sensor bracket, pump, siphon breaker, tube holder and 3 metres of silicone tubing.

A slide-out control panel 25 is also included, providing a dedicated mounting area for aquarium controllers and compatible electrical equipment within the cabinet. This helps organise the monitoring and filtration controls while keeping them accessible for routine adjustments and maintenance.

Key Features:

• 246 Litre Complete Reef Aquarium System: Combines a 204 litre display with a 42 litre in-cabinet sump and a comprehensive MAX equipment package.
• 90 cm Display Length: Provides room for arranging live rock, coral colonies and swimming areas for suitable marine fish.
• 53 cm Display Depth: Offers front-to-back space for arranging rockwork and coral placement.
• 50 cm Display Height: Provides vertical space for developing coral structures and aquascaping.
• Ultra-Clear Glass: High-clarity viewing panels provide clear views of fish, corals and aquascaping.
• Eurobraced Construction: Reinforces the upper perimeter of the aquarium for additional structural strength.
• High-Quality Euro-Silicone: Bonds the glass panels for long-term structural integrity.
• Marine-Spec Plywood Cabinet: Designed to support the full contour of the glass aquarium.
• Adjustable Cabinet Feet: Allow the aquarium to be levelled during installation.
• Choice of Cabinet Finishes: REEF-FRAME cabinets are available in black, white and classic oak.
• Central Overflow Box: Conceals the aquarium plumbing within the display.
• Large Surface Skimmer: Collects water from the display and incorporates removable comb sections for cleaning.
• ReefGate Precision Valve: Allows accurate downflow adjustment to help reduce operating noise.
• Enlarged Downflow Pipes: Designed to reduce turbulence and support quieter operation.
• Hydrodynamic Plumbing: Supports efficient water circulation between the display and sump.
• 25 mm Curved Return Outlet: Directs returning water into the display aquarium.
• Optional Plumbing Connectors: Compatible metric and USA connector kits are available for plumbing modifications.
• 42 Litre Reef Spec Sump: Provides dedicated space for mechanical filtration, protein skimming and the return pump.
• Adjustable Skimmer Chamber: Allows the operating water level to be set according to skimmer requirements.
• Optional Refugium Divider: Allows a dedicated refugium chamber to be created within the sump.
• Integrated Bubble Trap: Helps prevent air bubbles from returning to the display aquarium.
• ReefMat-Ready Sump: Removable mechanical filtration compartment allows installation of a compatible ReefMat roller filter.
• ReefLED G2 115 Lighting: Includes two 115 W reef LED lights with mounting arms.
• 230 W Combined Lighting Power: Each ReefLED G2 115 features a 115 W LED array.
• Adjustable Reef Lighting: Features a 10,000–23,000 K spectrum and separate 3 W moonlight channel per light.
• ReefBeat Lighting Control: Supports customised schedules, acclimation programmes and lunar cycles.
• ReefWave 25 Circulation: Includes two circulation pumps, each providing up to 7,500 L/hour of water movement.
• ReefRun G2 4000 Return Pump: Includes adjustable flow of 2,000–4,000 L/hour.
• REEFER DC 300 Protein Skimmer: Includes automatic self-levelling, foam-wetness monitoring and collection-cup waste-level monitoring.
• ReefMat 250 Automatic Roller Filter: Provides automatic mechanical filtration with a 32 metre fleece roll.
• ReefBeat Filter Monitoring: Provides fleece usage information and replacement notifications.
• ReefControl Pro: Supports up to seven compatible ReefSense probes or sensors with live readings, logs and notifications.
• pH and Temperature Monitoring: Includes a temperature-compensated pH/temperature probe.
• Automatic Freshwater Top-Off: ReefControl ATO module replaces water lost through evaporation.
• Solid-State Water-Level Detection: Provides automatic monitoring of the aquarium's top-up requirements.
• Complete ATO Installation Kit: Includes pump, sensor bracket, siphon breaker, tube holder and silicone tubing.
• Slide-Out Control Panel 25: Provides accessible mounting space for aquarium controllers and compatible equipment.

The Red Sea REEF-FRAME MAX 250 brings together a 90 cm eurobraced aquarium, reinforced marine-spec cabinet and dedicated filtration sump with a comprehensive selection of reef equipment. Its two ReefLED G2 115 lights, dual ReefWave 25 circulation pumps, ReefRun G2 4000 return pump, REEFER DC 300 skimmer and ReefMat 250 automatic roller filter provide the main equipment needed for maintaining a marine reef aquarium. ReefControl Pro monitoring, automatic freshwater top-off and the slide-out control panel add practical management features, making the MAX 250 a complete option for a medium-sized reef installation.

Specifications:

• Model: REEF-FRAME MAX 250
• Aquarium Type: Complete marine reef aquarium with integrated sump and MAX equipment package
• Total System Water Volume: 246 litres
• Display Tank Volume: 204 litres
• In-Cabinet Sump Volume: 42 litres
• Display Dimensions (L x W x H): 90 x 53 x 50 cm
• Total System Height: 137 cm, excluding lighting
• Front Glass Thickness: 12 mm
• Side Glass Thickness: 12 mm
• Bottom Glass Thickness: 12 mm
• Back Glass Thickness: 10 mm
• Glass Construction: Ultra-clear glass with high-quality euro-silicone bonding
• Glass Bracing: Eurobracing
• Cabinet Material: Marine-spec plywood
• Cabinet Features: Full-contour aquarium support and adjustable levelling feet
• Cabinet Finish Options: Black, white and classic oak
• Overflow System: Central overflow box with large surface skimmer and removable comb sections
• Downflow System: Enlarged downflow pipes with rectangular flow profile
• Flow Control: ReefGate high-precision gate valve
• Return Outlet: 1 x 25 mm curved outlet for a single return pump
• Plumbing: Hydrodynamic piping with optional metric and USA connector kits
• Filtration Sump: Reef Spec sump with adjustable skimmer chamber, removable mechanical filtration compartment and bubble trap
• Refugium Divider: Optional
• ReefMat Compatibility: ReefMat-ready removable filtration compartment
• Monitoring Controller: ReefControl Pro
• Monitoring Probe: Temperature-compensated pH/temperature probe
• Automatic Top-Off: ReefControl ATO module with solid-state water-level detection
• Equipment Mounting: Slide-out control panel 25

Included Equipment:

• Aquarium: 1 x REEF-FRAME MAX 250 ultra-clear glass display tank
• Cabinet: 1 x marine-spec plywood cabinet with adjustable levelling feet
• Filtration Sump: 1 x 42 litre Reef Spec sump
• Plumbing: Hydrodynamic piping with ReefGate precision valve and single 25 mm return outlet
• Lighting: 2 x ReefLED G2 115
• Lighting Mounts: 2 x mounting arms
• Lighting Power: 115 W LED array per unit; 230 W combined
• Light Dimensions: 15.5 x 13.5 x 5.7 cm per unit
• Published Lighting PAR: 500 at surface; 150 at 50 cm depth
• Lighting Spectrum: Adjustable 10,000–23,000 K
• Moonlight Channel: Separate 3 W channel per unit
• Lighting Control: ReefBeat with acclimation programmes, lunar cycles and customised schedules
• Circulation Pumps: 2 x ReefWave 25
• Circulation Pump Maximum Flow: 7,500 L/hour per pump
• Circulation Pump Power Consumption: 4–25 W per pump
• Circulation Pump Recommended Aquarium Length: 45–120 cm
• Circulation Pump Maximum Glass Thickness: 15 mm
• Circulation Pump Cable Length: 3 m per pump
• Return Pump: 1 x ReefRun G2 4000
• Return Pump Flow Rate: 2,000–4,000 L/hour
• Return Pump Maximum Head: 3.4 m
• Return Pump Power Consumption: 16–38 W
• Return Pump Control: Local flow controller; optional ReefBeat integration through ReefRun Dual Controller
• Protein Skimmer: 1 x REEFER DC 300
• Protein Skimmer Water Flow: 1,000 L/hour
• Protein Skimmer Air Flow: 500 L/hour
• Protein Skimmer Power Consumption: 20 W
• Protein Skimmer Height: 53 cm
• Protein Skimmer Pump: Sicce PSK DC-1200
• Protein Skimmer Functions: Automatic self-levelling, foam-wetness monitoring and collection-cup waste-level monitoring
• Automatic Roller Filter: 1 x ReefMat 250
• ReefMat Recommended System Volume: Up to 250 litres
• ReefMat Maximum Flow: 3,500 L/hour
• ReefMat Dimensions: 16 x 20 x 49 cm
• ReefMat Fleece Width: 8 cm
• ReefMat Fleece Roll Length: 32 m
• ReefMat Functions: Automatic fleece advancement, ReefBeat usage monitoring and replacement notifications
• Monitoring Controller: 1 x ReefControl Pro
• ReefControl Capacity: Up to 7 compatible digital ReefSense probes or sensors
• ReefControl Functions: Live readings, historical logs and notifications
• Monitoring Probe: 1 x pH/temperature probe
• pH Measurement: Temperature-compensated
• pH Accuracy: 0.05 pH
• pH Precision: 0.01 pH
• Probe Temperature Accuracy: 0.05°C
• Automatic Top-Off Module: 1 x ReefControl ATO module
• ATO Water-Level Detection: Solid-state sensor
• ATO Temperature Sensor Accuracy: 0.1°C
• ATO Pump Maximum Flow: 300 L/hour
• ATO Pump Maximum Head: 2.5 m
• ATO Pump Power Consumption: 6–10 W
• ATO Pump Diameter: 4.5 cm
• ATO Installation Kit: Sensor bracket, pump, siphon breaker, tube holder and 3 m silicone tubing
• Equipment Mounting: 1 x slide-out control panel 25

Please Note: The REEF-FRAME MAX 250 includes the lighting, circulation pumps, return pump, protein skimmer, ReefMat roller filter and ReefControl monitoring equipment listed above. The optional sump refugium divider, ReefRun Dual Controller, plumbing connector kits and additional compatible monitoring accessories are available separately.