Grodan® GRO-BLOCK Improved GR10, Large 4" Block with Hole, 4" x 4" x 4", 6 Blocks Per Strip (24 Strips/Case) Root Inoculants Always add each nutrient

Always add each nutrient

Bacteria: Bacillus azotoformans

and the rest of your hydroponic system

5 inches Item Weight 14

and secondary nutrient conditions your plants for robust growth

Grodan® GRO-BLOCK Improved GR10, Large 4" Block with Hole, 4" x 4" x 4", 6 Blocks Per Strip (24 Strips/Case) Root Inoculants Always add each nutrientGrodan GRO Block Improved GR10 Large 4" (4 x 4 x 4) with Hole Unwrapped Strips in Carton, 144 Units (24 Strips of 6) A core component of our "Precision Growing philosophy, Grodan Improved Gro Blocks with Advanced Wetting Technology allows you to cultivate more uniform and high quality crops while using less water and nutrients, batch after batch. Leverage the benefits of products developed alongside plant scientists, that are specifically engineered