IWS Pro Flexi Tank Assembly 400L (Tank & Kitbox)

The IWS Pro Flexi Tank Assembly 400L (Tank & Kit Box) is a large-capacity, flexible water storage solution purpose-built for hydroponic systems, irrigation setups, and indoor/outdoor gardening environments. Its collapsible, flexible design allows growers to maximize storage without sacrificing space — making it ideal for larger grow rooms, commercial hydroponic operations, or setups with limited floor space. When not in use, the tank folds down compactly for easy storage.

Constructed from reinforced, heavy-duty PVC fabric with durable polymer support poles, the tank offers strong structural integrity even when filled. The kit box includes all necessary fittings, plumbing accessories, washers, grommets and connectors — enabling a seamless installation and integration with pumps, reservoirs, drainage systems, and hydroponic delivery lines. Whether you need nutrient solution storage, water reservoir capacity, or general fluid handling, this 400-litre flexi tank delivers reliable and flexible service.

Key Features

• 400-litre capacity — excellent for medium to large-scale hydroponic, irrigation, or nutrient delivery systems.

• Flexible, collapsible design — folds flat for compact storage when empty; helps save space and allows placement in tight or awkward areas.

• Heavy-duty reinforced PVC fabric and sturdy support poles — ensures long-term durability, leak resistance, and structural stability when filled.

• Comprehensive kit box included — all necessary fittings, connectors, and installation components provided for easy setup and immediate use.

• Compatible with pumps, reservoirs, and hydroponic plumbing systems — ready for integration into most standard hydroponic setups.

• Portable and easy to transport when empty — convenient if relocating or storing between grow cycles.

• Versatile applications — for nutrient solution storage, water reservoirs, backup water storage, rainwater harvesting, or irrigation systems.

Technical Specifications

• Capacity: 400 litres

• Approximate Diameter: ~800–850 mm (subject to slight batch variation)

• Approximate Height (when erected): ~950–1000 mm

• Material: Reinforced flexible PVC fabric with support structure (polymer poles)

• Included Kit Components: Plumbing fittings, hose connectors, grommets, washers, cap/valve, support poles, and installation accessories

• Setup Time: Typically 15–20 minutes depending on experience and setup complexity

• Storage: Collapsible — folds down when empty for compact storage

Ideal Use Cases

• Large-scale hydroponic nutrient storage

• Commercial or semi-commercial grow room water reservoir

• Indoor/outdoor irrigation and water distribution systems

• Grow tents or rooms requiring high-volume water reserves

• Rainwater collection & storage (if used outdoors — ensure suitability for potable water if needed)

• Situations where rigid tanks are impractical due to space constraints

Why Choose the IWS Pro 400L Flexi Tank Assembly

The 400L flexi tank offers a robust balance between high-volume storage and flexible installation. Its reinforced construction, combined with a complete kit box, makes it a practical, efficient, and durable solution for growers needing dependable water or nutrient storage without the footprint or inflexibility of rigid tanks. For anyone scaling up their hydroponic or irrigation operations — whether commercial or serious hobby — this tank provides a reliable backbone for smooth, efficient operations.