IWS Flood & Drain 6 - 48 Pot Systems

In stock online
Standard Delivery £6.95*
Next Day Delivery* Next Day Delivery*
Plain Packaging Used Plain Packaging Used
Click and Collect Click and Collect
Product Name Qty Price
IWS System 6 Pot
IWS System 12 Pot
IWS System 24 Pot
IWS System 36 Pot
IWS System 48 Pot


Ready for giant yields in system that’s easy to manage with a flexible layout? Invest in the tried, tested, proven 16mm IWS Flood & Drain System.

How's it work? It’s all about getting oxygen to the roots.  

When feeding, plant pots are flooded with feed. When feeding ends, pots are quickly drained of feed. This locks oxygen in the rootzone, todrive nutrient uptake, fuel growth & prevent nasty root diseases.

The IWS (Intelligent Watering System) is an ingenious and easy-to assemble flood and drain system that can accommodate between 6 and 48 pots, all fed by a central reservoir. It comes as a complete kit and can be used with a variety of growing media.

This versatile system delivers water based nutrients to your plants via a pump, taking the hassle out of watering your plants manually. As water is pushed through your growing medium, all stale oxygen in your pots is replaced with fresh oxygen, giving your plants a boost each time.

The ease of the IWS means this system is suitable for all levels of gardener, whether you’re a hobbyist or a commercial grower.


  • Versatile and scalable system
  • Easy to assemble
  • Can be used with a variety of growing media
  • 13mm inner diameter pipes (16mm outer diameter)
  • Handy fixed timer (1 minute segments)
  • Flexible, modular layout – position pots how you want
  • Easy to manage – pots are filled from a 1 tank
  • Quiet – the pumps hardly ever on!
  • Saves headroom - pots sit on the floor
  • Low waste! Drained feed is stored for recirculation
  • Extreme oxygen – better roots, growth, nutrient uptake
  • Simple to set up and program
Delivery & Returns
Next Day Delivery 12 Noon
Next Day Delivery
In a hurry for your order? Order before 1 pm Mon - Thurs for next working day delivery *subject to stock availability T&C's apply.
Different delivery address?
Different delivery address?
Do your goods need shipping to an alternative address? If so, paying by bank transfer gives you the freedom to have them delivered to anywhere in the UK.
Free Returns
Free Returns
Faulty or damaged item? No problem, contact us on 0800 038 7100 or customerservice@hollandhorticulture.co.uk and we can arrange a free collection.
Plain Packaging
Plain Packaging
All parcels, no matter how big or small, are dispatched in plain packaging using black wrap that's secured using 'fragile' tape.
How to Pay
Credit / Debit Cards
We accept all major credit and debit cards (excl. American Express) All transactions are processed using a secure server via SagePay. Please note: When paying by credit card we can only ship to the card statement address.
Simply select this option at checkout if you prefer to pay through PayPal. Please note: When paying by PayPal, we can only ship items to the account owners confirmed address.
Banks Transfer
Select the option for Bank Transfer at checkout if you wish to receive your item anywhere within the UK. Please use your order number as payment reference.
Click & Collect
Collect your online orders from 3 of our 4 stores in as little as under an hour*! Simply pay online, choose location & collect in-store for free! Available from Manchester, Huddersfield & Flint (*subject to stock availability)
Brand Nutriculture

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