Lettuce growing in the nutrient
Lettuce growing in the nutrient

Hydroponic - The Raft System


A hydroponic raft system is a floating piece of styrofoam which is floated on top of a polystyrene container with nutrient added into the box. [and beans used in bag beans, can be used also for support of the plants] with the plant roots extending downwards through a small hole cut into the sheet of foam or cup, or other container held by the float.

 

The seedling sits on top of the float [styrafoam] while the roots hang down into the box of nutrient [and beads].