Red Sea Reef-Frame 350 Aquarium & Cabinet

The Red Sea REEF-FRAME 350 Marine Aquarium is a reef-ready aquarium system combining a 282 litre display tank with a 71 litre in-cabinet sump, providing a total system water volume of 353 litres. Featuring a spacious 120 x 55 x 50 cm display, it offers room for creating a marine reef aquarium with live rock, coral colonies and suitable marine fish. The system brings together an ultra-clear glass aquarium, reinforced cabinet, Reef Spec filtration sump and integrated plumbing, allowing you to select additional equipment to suit your reef.

Part of the Red Sea REEF-FRAME range, the aquarium features ultra-clear glass bonded with high-quality euro-silicone for long-term structural integrity. The display is constructed with 12 mm front glass, 15 mm side glass, 12 mm bottom glass and 12 mm back glass. Eurobracing provides additional reinforcement around the aquarium, while the clear viewing panels allow detailed observation of fish, corals and aquascaping.

The REEF-FRAME 350 is supported by a marine-spec plywood cabinet designed to support the full contour of the aquarium. Adjustable levelling feet help achieve a level installation, while the cabinet provides enclosed space for the filtration sump and associated equipment. The REEF-FRAME range is available in black, white and classic oak cabinet finishes, offering options for different room settings.

The aquarium incorporates a large central overflow box that conceals the plumbing and includes a surface skimmer with removable comb sections. These removable components provide convenient access for routine cleaning and maintenance. Enlarged downflow piping with a rectangular profile supports efficient water movement through the overflow system while helping reduce operating noise.

The REEF-FRAME 350 includes the ReefGate high-precision gate valve, allowing accurate regulation of water flowing from the display aquarium into the sump. When correctly balanced with a compatible return pump, the valve helps achieve quieter operation. Hydrodynamically designed plumbing supports efficient water circulation, while optional metric and USA connector kits provide additional options for plumbing configurations.

Unlike the smaller REEF-FRAME 170 and 250 models, the REEF-FRAME 350 features two 25 mm curved return outlets. These dual outlets allow returning water to be distributed through two points in the display and support either single- or dual-pump configurations, providing flexibility when planning the aquarium's return plumbing.

The integrated 71 litre Reef Spec sump provides dedicated space for essential filtration equipment beneath the aquarium. Its protein skimmer chamber features adjustable water height, allowing the operating depth to be set according to the requirements of a compatible skimmer. An integrated bubble trap helps prevent air bubbles from being carried back into the display aquarium through the return pump.

The sump also includes a removable mechanical filtration compartment, making it ReefMat-ready for installation of a compatible Red Sea ReefMat automatic roller filter as an optional upgrade. An optional sump divider can also be fitted to create a dedicated refugium chamber, providing additional flexibility for biological filtration and nutrient management.

Key Features:

• 353 Litre Marine Aquarium System: Combines a 282 litre display aquarium with a 71 litre in-cabinet filtration sump.
• 120 cm Display Length: Provides generous space for arranging live rock, coral colonies and swimming areas for suitable marine fish.
• 55 cm Display Depth: Offers room for layered aquascaping and positioning corals at different depths.
• Ultra-Clear Glass: High-clarity viewing panels provide clear observation of fish, corals and rockwork.
• Eurobraced Construction: Reinforced glass design provides additional structural strength.
• 15 mm Side Glass: Thick side panels complement the 12 mm front, bottom and back glass panels.
• High-Quality Euro-Silicone: Glass panels are bonded with euro-silicone for long-term structural integrity.
• Marine-Spec Plywood Cabinet: Designed to support the full contour of the aquarium.
• Adjustable Cabinet Feet: Allow the aquarium cabinet to be levelled during installation.
• Cabinet Finish Options: The REEF-FRAME range is available in black, white and classic oak finishes.
• Central Overflow Box: Conceals the aquarium plumbing within a dedicated overflow compartment.
• Large Surface Skimmer: Helps draw surface water into the overflow and filtration system.
• Removable Surface-Skimming Combs: Provide convenient access for cleaning and maintenance.
• Enlarged Downflow Piping: Rectangular-profile downflow design promotes efficient water movement and quieter operation.
• ReefGate Precision Valve: Allows accurate adjustment of the downflow to help achieve near-silent operation when correctly balanced.
• Hydrodynamic Plumbing: Designed to support efficient water circulation between the display aquarium and sump.
• Optional Plumbing Connectors: Metric and USA connector kits are available separately for alternative plumbing configurations.
• Dual 25 mm Curved Return Outlets: Two return nozzles distribute returning water into the display aquarium.
• Single- or Dual-Pump Compatibility: Dual return outlets provide flexibility when selecting compatible return pump configurations.
• Integrated Reef Spec Sump: Provides 71 litres of dedicated space for filtration equipment beneath the aquarium.
• Adjustable Skimmer Chamber: Allows the sump water height to be adjusted for a compatible protein skimmer.
• Optional Refugium Divider: Supports the addition of a dedicated refugium chamber within the sump.
• Integrated Bubble Trap: Helps prevent air bubbles from returning to the display aquarium.
• ReefMat-Ready Filtration: Removable mechanical filtration compartment allows installation of a compatible Red Sea ReefMat automatic roller filter.
• Flexible Equipment Selection: Allows you to choose compatible lighting, return pump, circulation pumps and protein skimmer to suit your aquarium.

The Red Sea REEF-FRAME 350 provides a practical foundation for creating a larger marine reef aquarium with space for developing coral colonies and aquascaping. With its 120 cm eurobraced ultra-clear glass display, reinforced plywood cabinet, dual 25 mm return outlets, ReefGate precision valve and ReefMat-ready Reef Spec sump with optional refugium divider, it combines dependable construction with flexible filtration and equipment options for establishing and maintaining your reef.

Specifications:

• Model: REEF-FRAME 350
• Aquarium Type: Marine reef aquarium with in-cabinet filtration sump
• Total System Water Volume: 353 litres
• Display Tank Volume: 282 litres
• Sump Volume: 71 litres
• Display Dimensions (L x W x H): 120 x 55 x 50 cm
• Total System Height: 137 cm (excluding lighting)
• Front Glass Thickness: 12 mm
• Side Glass Thickness: 15 mm
• Bottom Glass Thickness: 12 mm
• Back Glass Thickness: 12 mm
• Glass Construction: Ultra-clear glass with high-quality euro-silicone bonding
• Bracing: Eurobracing
• Cabinet Material: Marine-spec plywood
• Cabinet Features: Full-contour aquarium support and adjustable levelling feet
• Cabinet Finish Options: Black, white or classic oak
• Overflow Configuration: Central overflow box with removable surface-skimming combs
• Downflow System: Enlarged rectangular-profile piping
• Flow Control: ReefGate high-precision gate valve
• Plumbing: Hydrodynamic piping
• Return Outlets: 2 x 25 mm curved outlets (single- or dual-pump compatible)
• Filtration Sump: Reef Spec sump with adjustable-height skimmer chamber
• Bubble Trap: Included
• ReefMat-Ready: Yes, with removable mechanical filtration compartment
• Optional Refugium Divider: Compatible, available separately
• Optional Plumbing Connectors: Metric and USA connector kits available separately

Included Equipment:

• Aquarium: 1 x REEF-FRAME 350 eurobraced ultra-clear glass display tank
• Cabinet: 1 x marine-spec plywood aquarium cabinet with adjustable levelling feet
• Filtration Sump: 1 x 71 litre Reef Spec in-cabinet sump
• Skimmer Chamber: Adjustable-height protein skimmer compartment
• Mechanical Filtration Compartment: Removable ReefMat-ready section
• Bubble Trap: Integrated sump bubble trap
• Overflow: Central overflow box with removable surface-skimming combs
• Plumbing: Hydrodynamic pipework with enlarged downflow
• Flow Control: ReefGate high-precision gate valve
• Return Outlets: 2 x 25 mm curved return nozzles

Please Note: Lighting, return pump, circulation pumps, protein skimmer and ReefMat automatic roller filter are not listed as included with the standard REEF-FRAME 350 system and should be purchased separately as required. ReefControl monitoring and automatic top-off equipment are also not specified as included. The optional refugium divider and plumbing connector kits are available separately.