Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip food-storage which in turn increases flower

which in turn increases flower and fruit biomass

they have a cotton lining

- Less heat

The respective companies lead the field in LED R&D

Grodan Gro Block Improved GR4 Small 3" No Hole 3" x 3" x 2.6" Strip food-storage which in turn increases flowerNew 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