Serious flood & drain control for bigger root zones. The IWS Flood & Drain PRO Remote is a fully automated recirculating feed system designed for growers who want fast cycling, consistent saturation, and repeatable results, without hand-watering. The 25L pot version is ideal for larger plants, longer veg times, and anyone wanting more media volume for a more stable root environment.
Built around rapid fill + rapid drain, this system lets you control how long the root zone sits in nutrient solution before draining away and pulling fresh oxygen back into the medium. That oxygen-rich cycle helps drive faster root growth and keeps plants feeding evenly across the whole setup.
Why it’s “PRO”
- High-flow 25mm pipework for faster filling and drainage than standard flood & drain layouts.
- Remote timer control with minute-adjustable scheduling (ideal when you want quick access without opening the grow room).
- Powerful flood pump designed to deliver even flooding across multi-pot runs.
- Consistent flood height control to help prevent over-filling and keep irrigation uniform.
- Oxygen advantage: as the system drains, stale air is drawn out and replaced with fresh oxygen around the root zone.
How it works
- Flood: Nutrient solution is pumped from the reservoir to evenly saturate each pot.
- Soak: Plants feed while the root zone is fully saturated.
- Drain: The solution returns to the reservoir and fresh air is pulled through the medium—re-oxygenating the root zone.
- Repeat: Timed cycles keep the environment consistent day after day.
Key benefits
- More consistency than hand-watering—every pot gets the same feed cycle.
- Less labour and fewer mistakes once dialled in.
- Stronger root development thanks to regular flood/drain oxygenation.
- Scales easily across multiple pots for larger rooms and repeatable runs.
- Cleaner workflow with the controller/timer positioned outside the grow space.
What’s typically included
- Controller/brain unit
- 25L pots (outer pots) with inner pots (style depends on the kit variant)
- 25mm fittings and pipework
- Flood pump
- Remote timer
- Pot stands
- Reservoir (FlexiTank size varies by kit configuration)
- Root control accessories (where supplied)
Media compatibility
This system is commonly run with clay pebbles, coco, or mixed media depending on the inner pot style supplied with your kit. If you’re running finer media, consider a drainage layer and keep the system clean to maintain strong flow and reliable drainage.
Best for
- Growers running larger plants who want bigger pots and stable root zones
- Multi-pot rooms that need even feeding across every site
- Anyone wanting a repeatable automated irrigation setup with strong flow and fast cycling
Tip: Flood & drain systems perform best when you keep your reservoir fresh, maintain clean lines, and dial your flood frequency to match plant size, temperature, and medium type.