Our Multi-Ducts are large NFT systems ideal if you've got a long space with limited headroom. The long planting channels (up to 8ft long) and low height reservoir enable you to make the most of your growing space - even in spaces with little headroom. And because our Multi-Ducts utilise the Nutrient Film Technique which provides plants with almost unlimited access to oxygen, water and nutrients in perfect balance you can expect yields typically 3x larger than traditional soil methods.