Grodan Classic

Grodan Classic is a high-performance stone wool substrate tailored for professional cultivation in greenhouse and controlled-environments. Engineered using NG2.0 technology, this precision-growing slab delivers a consistent and responsive root-zone environment, combining simple irrigation, rapid EC refreshment, and excellent drainage control. The slab features a horizontally oriented, hydrophilic fiber matrix that promotes even water content (WC) and electrical conductivity (EC) distribution, enabling optimal nutrient delivery across the slab surface and depth. Its uniform absorption and drainage characteristics allow growers to fine-tune irrigation strategies and quickly reset EC levels. The slab's uniform structure encourages horizontal root expansion and continuous proliferation in both propagation blocks and slabs. But if you are a grower who wants to expand further, then you might want to take a look at the Grodan Plantop Dry or the Grodan Delta NG2.0.