To plant hydroponics you do not need nutrients, but all you need is an inert that will serve as a buffer and a crop buffer. These media include:
Charcoal
Media plant hydroponics plant this one can be said as the main media. Because the media made from rice pulp is or is called charcoal husk media capable of providing the best results for vegetable crops. Not only that, charcoal husk is also good for tree nursery.
Sponge
If you usually use this one to wash dishes, sponges can now be used for hydroponic planting media.
The use of sponges for hydroponics plants is evidenced by the growth of moss on the grass when the sponge is left outdoors and water and enough light. Sponges can also be used for hydroponic plant breeding.
Expanded clay
Expanded clay is a kind of clay that contains minerals. this medium is very good for the process of seeding or care of young plants.
Rock wool
The next media is a non-organic medium by the way of making it by blowing air / vapor in melting rocks. Where the result is a kind of hollow fiber.
Coir
Coir or more familiarly called coconut fiber is a good medium for the nursery process.