Grodan Uni Slab

Grodan Uni-Slab can support large plants throughout their lifecycle. Allowing greenhouse and indoor growers to realize excellent production levels per plant. It also affords extra physical stability for top-heavy plants and additional protection from algae and root pests thanks to its UV-resistant cover. Expert Slabs is the slab that drains the fastest because of its vertical fibers. By far the most popular slab for the hydroponic hobbyist market. In addition, the top layer is thicker, which stays wetter, while the bottom layer stays drier. In effect it defies gravity, allowing more even distribution of moisture throughout the slab.

The Improved Gro-Block™ GR40 Uni-Block from Grodan® is formulated with an advanced wetting agent and optimized wool structure to consistently deliver outstanding results for controlled environment indoor and greenhouse commercial grows.

These leading-edge Grodan Improved blocks have the optimal fiber structure and physical properties for crop uniformity, more even water content (WC) and electrical conductivity (EC) distribution throughout the entire block, and the greatest steering capabilities available. This uniformity not only allows for more efficient and sustainable use of the entire substrate volume, but is the basis for a well-defined root system with higher capacities for water and nutrient uptake to produce robust and vigorous crops.

Grodan developed the Grodan Improved product line using scientific methods in conjunction with the world-renowned Wageningen University in the Netherlands. Grodan Improved was successfully trialed in the field by leading cultivation facilities throughout North America.

New density + new hydrophilic technology = better water distribution and root development!