Seedling Nursery Beds are the industry standard for propagating seedlings in a modern greenhouse.
The tables allow a large number of seedlings to be propagated in a confined space before they are transplanted into the main hydroponic system.
Seedling Nursery Beds use a flood and drain process to hydrate the growing media from beneath before draining the excess moisture away.
The flooding cycle forces stale air out of the air filled porosity in the growing media and then sucks fresh air back into the media on the drain cycle.
The growing media is not fully submersed but is only partially saturated, allowing capillary action to hydrate the rest of the media to the very top.
Once the table is drained the root zone is exposed to oxygen once more and vigorous seedling growth is promoted.