IWS Flood and Drain Systems – 6, 12, 24, 36 and 48 Pot | Active Hydroponic Grow System

🌱 IWS Flood and Drain Systems – 6, 12, 24, 36 and 48 Pot — Guide & Product Information

💧 Professional Active Flood and Drain System

The IWS Flood and Drain System is a high-performance active hydroponic grow system designed for growers who want reliable nutrient delivery, strong root-zone oxygenation and scalable multi-pot system control. Using pump-fed flood and drain technology, the system delivers water-based nutrients through your chosen growing medium, then drains away to refresh the root zone ready for the next cycle.

As nutrient solution is forced through the growing medium, stale oxygen in the pots is replaced with fresh oxygen. This helps support a healthier root environment, stronger nutrient uptake and improved plant performance across the full system.

• ✔ Active pump-fed flood and drain operation
• ✔ Refreshes oxygen around the root zone during feeding
• ✔ Suitable for serious multi-pot hydroponic growing

Browse more complete systems in our IWS Kits & Spares category, or view the full Grow Systems range.

📦 Pot Count Variations

Choose the system size that best matches your growing space, plant count and reservoir requirements. The IWS Flood and Drain System is available in five pot-count options:

• ✔ 6 Pot System — compact active hydroponic setup for smaller spaces
• ✔ 12 Pot System — balanced option for medium grow rooms
• ✔ 24 Pot System — larger system for expanded plant layouts
• ✔ 36 Pot System — high-capacity option for serious multi-pot growing
• ✔ 48 Pot System — maximum-size option for large grow rooms and professional layouts

🪴 Inner Pot Options

This system is available with three inner pot choices, allowing you to match the kit to your chosen growing medium and irrigation style.

• ✔ Aqua – 6.5L Clay Pebbles — designed for clay pebble systems and highly oxygenated hydroponic growing
• ✔ Culture – 6.5L Soil, Coco, Mixed Media — suitable for growers using soil, coco or blended grow media
• ✔ Punched – 9.5L Any Media — larger punched inner pot suitable for a wider range of growing media

Browse compatible growing media in our Coco Grow Media, Soil Grow Media, Hydroponic Media and Growing Media categories.

🔧 Complete System Contents

The IWS Flood and Drain System includes the core components required to set up and operate the system. This makes it a practical choice for growers who want a complete active system rather than sourcing every part separately.

• ✔ Tank with pumps
• ✔ Brain pot with timer unit
• ✔ Pots, including inner and outer pots
• ✔ IWS stands
• ✔ Elbows, T pieces and sealing glands
• ✔ 10 metres of 16mm pipe

For compatible spares and maintenance parts, view the IWS Universal Elbow, IWS Universal T Piece, IWS Universal Straight Piece and IWS 25mm Sealing Glands Assembly.

🌊 How Flood and Drain Feeding Works

Flood and drain systems work by temporarily flooding the growing medium with nutrient solution, then draining it away. This cycle helps feed the plant while refreshing oxygen around the roots. The result is an efficient root-zone environment that combines nutrient availability with aeration.

• ✔ Pump delivers nutrient solution through the growing medium
• ✔ Drain cycle helps pull fresh oxygen back into the pots
• ✔ Timer unit helps control feed cycle timing

For pipework replacement or system expansion, use our 30m Roll of 16mm Piping for IWS Flood and Drain Systems. For tank options, browse IWS Tank and IWS Flexitanks.

⚙️ System Control and Maintenance

The brain pot and timer unit help automate feeding cycles, reducing manual watering while giving growers more consistent irrigation control. As with any active hydroponic system, regular maintenance of pumps, pipework, fittings and reservoirs helps keep performance reliable.

• ✔ Timer-controlled feeding cycles
• ✔ Pump-fed nutrient delivery
• ✔ Regular pipework and fitting checks help maintain performance

For water movement spares, browse Water Pumps and our IWS Sub Pump.

💻 Technical Specifications

• ✔ Product: IWS Flood and Drain Systems – 6, 12, 24, 36 and 48 Pot
• ✔ System Type: Active flood and drain hydroponic grow system
• ✔ Pot Options: 6, 12, 24, 36 or 48 pots
• ✔ Inner Pot Options: Aqua 6.5L, Culture 6.5L or Punched 9.5L
• ✔ Media Compatibility: Clay pebbles, soil, coco, mixed media and wider grow media options depending on inner pot choice
• ✔ Pipework: Includes 10m of 16mm pipe
• ✔ Includes: Tank with pumps, brain pot with timer unit, pots, stands, elbows, T pieces, sealing glands and pipework
• ✔ Application: Hydroponic grow rooms, flood and drain systems, multi-pot growing and media-based active systems

🏡 Ideal Uses

• ✔ Active hydroponic growing
• ✔ Flood and drain systems for 6–48 plant layouts
• ✔ Clay pebble, coco, soil and mixed-media growing
• ✔ Growers wanting automated feeding and root-zone oxygenation
• ✔ Larger grow rooms and professional hydroponic layouts

📏 Setup and Usage Tips

• ✔ Choose the pot quantity based on your grow space and plant count
• ✔ Select the inner pot type based on your chosen growing medium
• ✔ Set feed cycles according to plant size, medium type and environmental conditions
• ✔ Keep pumps, pipework and fittings clean to prevent blockages
• ✔ Inspect sealing glands and connections regularly for leaks

For accurate nutrient mixing during setup, use a Measuring Jug, Measuring Syringe or 5ml Pipette. You can also browse Nutrients & pH Management.

❓ FAQ

What pot sizes are available with the IWS Flood and Drain System?
This system is available in 6, 12, 24, 36 and 48 pot options, making it suitable for medium to large hydroponic grow spaces.

Which inner pot should I choose?
Choose Aqua – 6.5L Clay Pebbles for clay pebble hydroponic setups, Culture – 6.5L Soil, Coco, Mixed Media for soil or coco-based growing, or Punched – 9.5L Any Media for a larger inner pot suitable for a wider range of media.

What does the system include?
The system includes a tank with pumps, brain pot with timer unit, inner and outer pots, IWS stands, elbows, T pieces, sealing glands and 10 metres of 16mm pipe.

How does flood and drain feeding work?
The system pumps nutrient solution through the growing medium, then drains it away. This feeding cycle helps refresh oxygen around the root zone while supplying water-based nutrients.

Can this system be used with coco or soil?
Yes — choose the Culture inner pot option for soil, coco or mixed media, or the Punched 9.5L option for wider media flexibility.