Grodan Delta 6.5 4x4x2.5 Inch Rockwool Blocks

In collaboration with the renowned Wageningen University and Research center in The Netherlands, along with leading growers across North America, Grodan has redefined the benchmarks for stone wool substrate excellence through their Grodan Gro-Block Improved. This innovation emerges from extensive scientific exploration and rigorous field trials, integrating Grodan's pioneering Advanced Wetting Agent to set new standards in crop cultivation. The Grodan Gro-Block Improved embodies the pinnacle of substrate design, offering unparalleled uniformity in crop growth. Its meticulously engineered fiber structure and physical attributes promote a harmonious balance of water content (WC) and electrical conductivity (EC) distribution across the block. This synergy fosters a robust root system, characterized by its heightened capacity for water and nutrient absorption, culminating in the vigorous growth of crops. Enhanced by cutting-edge wetting agent and hydrophilic technology, the Grodan Gro-Bloc