Hydroponic Growing Medium Foam. Rockwool is a long used hydroponic grow medium, especially when it comes to starting plants or starting clones. Hi, Can we use sponge or Foam instead of Clay Pebbles or Rockwool as a growing medium.
In hydroponics a "growing medium" is what you will use in place of soil to place your plants' roots. Use plenty of seeds so the sprouts will grow into a. What Is it Called Spread the seeds evenly over the foam rubber.
You need an air pump and an air stone.
The growing media is the substance over which the roots of the growing plants are supported.
Growing medium that can be used for the wick system includes vermiculite, perlite, coconut fiber and pro-mix among others. Hydroponic growing - or growing without soil - is an increasingly popular way to grow cannabis at home. Rockwool is a long used hydroponic grow medium, especially when it comes to starting plants or starting clones.