Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip Air Purification 3100K CMh Lamp included

3100K CMh Lamp included

PrSpec: 100 μmol/s

Top straps measure 16 inches and are padded for a comfortable fit

galvanized steel meshing

resulting in exuberant green foliage

Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip Air Purification 3100K CMh Lamp includedNew Grodan Improved! Improved product at current pricing. New density + new hydrophilic technology = better water distribution and root development. The uniform distribution of water and nutrients throughout the block allows for more efficient use of the entire substrate volume Full saturation of the blocks with no dry spots and improved EC control with less water is achieved in the rootzone due to the uniform, optimized wool resulting in a