After seed sowing an initial soaking of the growing substrate is required for optimum germination. This is normally done in the greenhouse but could also be done directly after the sowing process in the production line. The BCC Watering Tunnel is flexible to fulfil the requirements of initial soaking, cooling through misting and application of fungicides.

In a typical production line, the Watering Tunnel is placed after the Tray Covering Unit. The Watering Tunnel has a drive chain which feeds trays through the tunnel.