One tray, one tank. The long planting channels and low height reservoir enable you to make the most of your growing space. 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. Always try to make sure plants are well rooted out of the rockwool cubes before they are placed in the system to ensure they take immediately. Kit Contains: Tank - Top Tray - Stand - Top Plate - Delivery System Dimensions: 6ft x 3ft/225 x 118cm Tank size 90L Please note: Due to it's size, this item is only available for in-store pickup.