Grow Medium
Hydroponic growing medium can take different forms. Rockwool, Hydroton (expanded clay or shale pellets) and sphagnum moss can be used in year round soil less gardening. Grodan makes the worlds best rockwool growing medium, it comes many sizes from cubes, to blocks to slabs and even loose. Fox Farm's Ocean Forest potting soil and Pro Mix BX with Mycorise are two of the best soil mixes to use in indoor gardens.
