Hydroponic Reservoirs | 160L & 220L Nutrient Tank Systems

When you're running a serious hydroponic system, a 45L tub under your bench stops being enough. Multi-plant drip systems, commercial flood and drain setups, and large recirculating grows need a reservoir that can hold enough solution to run the system through multiple feed cycles without constant top-ups. These 160L and 220L hydroponic reservoirs are built for exactly that scale.

Constructed from heavy-duty UV-stabilised plastic with a light-blocking opaque finish, they maintain stable nutrient conditions by preventing the light penetration that triggers algae growth in open or translucent tanks. At 160 and 220 litres, they provide enough capacity to supply multi-site drip systems, large flood and drain trays, and DWC setups with consistent nutrient solution without the daily maintenance burden of smaller containers. Compatible with standard tub outlet fittings, grommets, and submersible pumps, they integrate directly into existing hydroponic plumbing without modification.

How It Works

Fill the reservoir with water and mix your nutrient solution to the target EC and pH. Place your submersible pump inside the reservoir to feed your irrigation system, or drill and fit tub outlet fittings through the wall for gravity-fed or recirculating connections. The opaque walls block all light from reaching the solution, preventing algae from establishing. The reinforced structure handles the full weight of a 160L or 220L solution load without flexing, keeping the reservoir stable and upright throughout the grow cycle. Top up as needed and monitor EC and pH regularly to maintain consistent nutrient delivery.

Key Benefits

• Available in 160L and 220L capacities. Sized for multi-plant systems, commercial grow operations, and large flood and drain setups that require consistent nutrient supply across extended periods.
• Light-blocking opaque construction prevents algae growth. Solid walls eliminate light penetration into the nutrient solution, removing the primary trigger for algae blooms that cloud reservoirs and compete with plants for oxygen.
• Heavy-duty UV-stabilised plastic. Built for continuous use in nutrient-rich environments, resisting the chemical exposure and temperature variation of indoor grow rooms and greenhouse operations.
• Compatible with standard hydroponic fittings. Can be drilled to accept tub outlet fittings in 13mm, 19mm, and 25mm, and grommets for airline pass-throughs, making them fully integrable into custom system builds.
• Supports pump-driven and gravity-fed systems. Works as a central supply reservoir for drip irrigation, flood and drain, DWC, and recirculating nutrient systems.
• Stable nutrient solution storage. Large volume reduces concentration fluctuations caused by plant uptake and evaporation, maintaining more consistent EC and pH between top-ups.

Applications

• Central nutrient reservoir for multi-plant drip systems
• Flood and drain system reservoir supply
• Deep Water Culture (DWC) nutrient tank
• Commercial hydroponic grow room nutrient storage
• Greenhouse irrigation supply tanks
• Nutrient solution mixing and storage

Technical Specifications

• Capacities. 160L / 220L
• Material. Heavy-duty UV-stabilised plastic
• Colour. Black (light-blocking)
• Function. Nutrient storage and irrigation supply
• Compatibility. Tub outlet fittings, grommets, submersible pumps
• Application. Hydroponics, drip irrigation, flood and drain, DWC
• Environment. Indoor, greenhouse, commercial systems
• Approximate Weight (empty). 160L approx. 5 to 7 kg, 220L approx. 7 to 10 kg

Frequently Bought Together

Turn this reservoir into a complete irrigation hub. Install Hydroponic Tub Outlet Fittings in 13mm, 19mm, or 25mm for sealed inlet and outlet connections through the reservoir wall. Use Hydroponic Grommets in 8mm to seal airline pass-throughs for air stone connections. Power your system with the Rio HF Submersible Water Pump placed inside the reservoir, and aerate your nutrient solution with the RESUN 12 Outlet Air Pump for maximum dissolved oxygen at commercial scale.