$16.99 (as of 30/10/2020 11:58 PDT details )
Features:
- Made from molten rock spun into cotton candy like fibers and then compressed into cubes, blocks, or slabs
- Has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth
- Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums