NEF Tub Solid 45L Black | Hydroponic Reservoir, Grow Tub & Mixing Container

A reliable nutrient reservoir is the foundation of any hydroponic system. Without a stable, light-proof container holding your nutrient solution, everything downstream, from your pump to your plants, is working against inconsistent conditions. The NEF Solid 45L Black Tub gives you a purpose-built starting point. Solid black construction blocks light completely, preventing the algae blooms that cloud nutrient solutions and compete with your plants for oxygen and nutrients. At 45 litres, it holds enough solution to run a multi-plant drip system, a DWC setup, or a flood and drain reservoir without constant top-ups.

The heavy-duty injection-moulded walls are built for repeated use in nutrient-rich environments, and the tub can be drilled to accept tub outlet fittings, grommets, and bulkhead connectors, making it a flexible base for custom system builds. Whether you're setting up your first hydroponic system or adding a dedicated mixing and storage container to an existing setup, the NEF 45L tub is a straightforward, durable solution that does exactly what it needs to.

How It Works

Fill the tub with water and nutrient solution to create your reservoir. Connect your submersible pump inside the tub to feed your irrigation system, or use tub outlet fittings drilled through the wall for gravity-fed or recirculating connections. The opaque black walls prevent light from penetrating the solution, eliminating the conditions that allow algae to establish. The reinforced wall structure handles the weight of a full 45L solution load without flexing or deforming, maintaining a stable, upright container throughout the grow cycle.

Key Benefits

• 45 litre capacity for multi-plant systems. Holds enough nutrient solution to run drip systems, DWC setups, and flood and drain reservoirs without constant refilling.
• Black light-proof construction prevents algae growth. Solid opaque walls block all light from reaching the nutrient solution, eliminating the primary cause of algae blooms in hydroponic reservoirs.
• Heavy-duty injection-moulded plastic. Built for repeated use in nutrient-rich, water-based environments across multiple grow cycles.
• Compatible with hydroponic fittings and outlets. Can be drilled to accept tub outlet fittings, grommets, and bulkhead connectors for custom system integration.
• Versatile across system types. Suitable as a nutrient reservoir, grow tray base, DWC container, flood and drain reservoir, or general-purpose mixing and storage tub.
• Easy to clean and maintain. Smooth interior walls resist residue buildup and clean out quickly between grow cycles.

Applications

• Hydroponic nutrient reservoir for drip and recirculating systems
• Deep Water Culture (DWC) grow container
• Flood and drain system reservoir
• Nutrient solution mixing and storage
• Custom hydroponic system builds
• Indoor grow room and greenhouse irrigation setups

Technical Specifications

• Capacity. 45 litres
• Colour. Black (light-proof)
• Material. Heavy-duty injection-moulded plastic
• Function. Reservoir, grow container, mixing tub
• Compatibility. Tub outlet fittings, grommets, irrigation fittings
• Application. Hydroponics, DWC, flood and drain, drip irrigation
• Environment. Indoor, greenhouse, commercial systems
• Unit Weight. Approx. 1.5 to 2.5 kg (empty)

Frequently Bought Together

Turn this tub into a complete reservoir with the right fittings. Install Hydroponic Tub Outlet Fittings in 13mm, 19mm, or 25mm for sealed inlet and outlet connections through the tub wall. Use Hydroponic Grommets in 8mm for airtight airline pass-throughs when running air stones inside the reservoir. Power your system with the Rio HF Submersible Water Pump placed inside the tub to feed your irrigation lines, and aerate your nutrient solution with the RESUN 6 Outlet Air Pump for improved dissolved oxygen levels and healthier roots.