Terrafibre 1.5" Growing Cubes (98/Slab)

These 1.5″ cubes are made of hemp fiber and are used for growing seedlings. They are biodegradable and hold 1050% of their weight in water.

• The description claims the cubes can be used for hydroponic media.
• The description claims the cubes are a sustainable alternative to Rockwool, peat moss, or coconut.
• The description claims the cubes are pH neutral.
• The description claims the cubes can capture carbon.