Green Man Combi System – DWC and Drip Hydroponic System
Green Man Combi System – DWC and Drip Hydroponic System
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
- 14-day returns
- Price match promise
- Free Wembley store pickup
- Advice from the team: 020 3488 0419
Description
Deep Water Culture Below, Drip Feed Above, One Central Tank
The Green Man Combi System is the flagship of Green Air Products UK's range and the multi-pot version of the Green Man combination pot. Every 40L combi pot feeds the roots two ways at once: a reservoir under the inner basket is aerated by a 4-inch airstone, as in deep water culture, while an air-powered pumping column lifts solution to a watering ring round the stem, drawing extra oxygen into it as it drips. The pots are linked by Iceline pipe to the Green Man Brain Controller and a central reservoir, and each pot's sloping, raised base drains it completely back to the tank, so the whole system shares one solution - nutrient strength, pH and temperature stay even from pot to pot instead of drifting, with no build-up in any one pot. Air does the work inside the pots, which keeps electricity use and noise low. Choose 2 to 16 pots with a rigid tank or a FlexiTank.
What's Included
- Green Man combi pots (2 to 16 by option), each with an inner basket and combi pipe kit: pumping column, watering ring and water-level pipe
- Green Man Brain Controller with timer
- Reservoir: rigid tank or FlexiTank (by option), fitted with a Sicce Syncra Silent 1,350 L/h pump and Green Man connection plug
- Iceline pipe and fittings to connect the pots
Key Benefits
- Top and bottom feeding in every pot: an aerated reservoir below, a drip ring above
- Air-powered pumping columns: no water pump in the pots, low power and little noise
- One shared solution: the Brain and central reservoir keep EC, pH and temperature even across the system
- Sloping, raised base drains each pot fully back to the reservoir and keeps roots off a cold floor
- 40L pots with inspection flaps for checking roots and solution level
- 2 to 16 pots, rigid tank or FlexiTank
How to Use
- Set the pots out level and connect each one to the Brain Controller with the Iceline pipe
- Seat a 4-inch airstone in each pot, run the airline up the corner notch and connect the airstones and pumping columns to your air pump
- Fit the inner baskets, plant into clay pebbles and set the watering ring round each stem
- Site the reservoir, connect its fill and drain lines and plug the pump lead into the Brain
- Set the feed schedule on the Brain, then check EC, pH and temperature at the reservoir and look at the roots through the inspection flaps
Technical Specifications
- Brand: Green Man (Green Air Products UK)
- System type: Combination deep water culture and top-drip, recirculating
- Pot capacity: 40L per pot
- Aeration: Seat for a 4-inch airstone in each pot
- Feed in the pot: Air-powered pumping column and watering ring
- Control: Green Man Brain Controller with timer, 12 month manufacturer warranty
- Reservoir pump: Sicce Syncra Silent, 1,350 L/h, Green Man connection plug
- Reservoir capacity: 100L for 2 and 3 pots, 250L for 4, 6 and 8 pots, 350L for 12 pots (not published for 16 pots)
- Reservoir type: rigid tank, or a collapsible Green Man FlexiTank in its place (by option)
- Pipe: Iceline
- Medium: Clay pebbles
Frequently Asked Questions
What runs on air and what runs on mains?
Inside the pots everything is air-driven: a central air pump feeds the airstones and lifts solution up each pumping column to the watering ring. The Sicce pump in the reservoir and the Brain Controller run from the mains to move solution between the tank and the pots.
Rigid tank or FlexiTank?
Both run the same system with the same Sicce pump and Green Man plug. The FlexiTank folds flat and is easier to move; the rigid tank stands on its own.
Can I add pots later?
Yes. Green Man Combi Kit pot packages add combi pots one, two, three or six at a time.
Combi or FD system?
The Combi grows in clay pebbles with a deep water culture reservoir in every pot and a drip ring on top. The FD system grows in coco, soil or a substrate mix flooded from below.
Works Well With

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.




