Rockwool Cubes,28Pack 1.4" Rockwool Cubes Used to Promote Vigorous Plant Reproduction,Cutting,Cloning and Seed Hydroponic Growth Medium(28)

Description

Rock wool blocks are made of basalt, coke, limestone, and a small amount of iron slag, which are melted and stretched at high temperatures, and then joined with hydrophilic binders. Finally, they are woven and compressed into a specific density before being cut.The dense fibers of agricultural rock wool are interwoven in a wavy pattern, with a horizontal distribution of fibers and a uniform distribution of nutrients, which is conducive to the extension and growth of the root system and promotes the uniform growth of plants.The chemical properties of rock wool are generally alkaline, and it is cut into different sizes at the factory with a hole in the middle for direct sowing