Grodan’s Classic Hugo Gro-Blocks are used in grow rooms and greenhouses worldwide. Trusted by hydroponic growers for over a decade, Grodan Gro-Blocks allow professional cultivators to grow more top quality produce with fewer inputs. The homogeneity of Grodan Gro-Blocks provides growers with a solid, consistent base for optimizing crop production. Cultivators can easily achieve a great balance of oxygen to nutrients and drive rapid plant growth. Grodan Gro-Blocks are clean, disease and pest free, lightweight, and easy-to-use. Professional growers love Grodan Gro-Blocks because they allow efficient use of water and nutrients throughout the growth cycle.