IWS 36 Pot Flood & Drain System UK | Hydroponic Grow System with 400L Tank

💧 Flood & Drain System Guide & Product Information

🌱 Ideal for Large Grow Rooms

The IWS 36 Pot Flood & Drain System is designed for growers who want to scale up their production while maintaining full control over feeding and plant health. Sitting just below commercial-scale systems, it offers a powerful solution for serious growers running larger indoor spaces. If you’re new to hydroponics, read our introduction to hydroponics.

• ✔ Ideal for large indoor grow setups
• ✔ Consistent feeding across all plants
• ✔ Reduces manual watering and labour

⚙️ How Flood & Drain Works

Flood and drain systems deliver nutrients by filling each pot with solution and then draining it away. This process replaces stale oxygen with fresh oxygen in the root zone, improving plant health and increasing growth rates. :contentReference[oaicite:0]{index=0}

• ✔ Flood cycle delivers nutrients directly to roots
• ✔ Drain cycle increases oxygen levels
• ✔ Supports faster growth and stronger plants

🛠 System Design & Features

This 36 pot system is supplied as a complete hydroponic kit, including everything needed for setup and operation. It uses a central reservoir and pump to feed all plants evenly, controlled by a timer for precise feeding schedules.

• ✔ Large 400L tank for nutrient storage
• ✔ 36 inner and outer pots with stands
• ✔ 16mm pipework system for reliable flow
• ✔ Timer-controlled feeding cycles

📏 Size & System Capacity

The 36 pot system is designed for high plant counts and larger grow environments, making it ideal for dedicated grow rooms.

• ✔ 36 plant sites for high production
• ✔ Typically supplied with a 400L reservoir
• ✔ Flexible layout for custom grow room design

🔧 How to Use

• ✔ Fill pots with clay pebbles or coco-based media
• ✔ Connect system to tank and pump
• ✔ Set feeding schedule using timer
• ✔ Monitor nutrient levels and pH regularly

For best results, use with nutrients and growing media.

🔗 Related Products & Setup Links

• ✔ Browse IWS systems and spares
• ✔ Use compatible water pumps
• ✔ Pair with tanks and reservoirs

🌿 Compatibility & Grow Setups

This system is designed for growers who want to maximise plant numbers while maintaining efficiency and control.

• ✔ Ideal for large indoor grow rooms
• ✔ Suitable for hydroponic and mixed media growing
• ✔ Expandable into larger or pro systems

❓ FAQ

What size tank does this system use?
This system typically includes a 400L reservoir for large-scale feeding.

What growing media should I use?
Clay pebbles are ideal, but coco-based mixes can also be used.

Is the system automated?
Yes, feeding cycles are controlled using a timer and pump system.

Who is this system best suited for?
Growers running larger setups who want automation and consistent high yields.