Grodan Gro-Block Improved GR10 Large (4x4x4) w/ Hole COCO The bottom draw inlet allows

The bottom draw inlet allows the pump to operate in less than 1/2 inch of water

providing an energy source for approximately 30 days

Turn any couch or table into a comfortable workstation

Patent pending genetics

so you’ll be able to customize it according to your preference

Grodan Gro-Block Improved GR10 Large (4x4x4) w/ Hole COCO The bottom draw inlet allowsGrodan Improved GR10 Large 4"x4"x4" Gro Blocks optimized wool structure allows for faster rooting in and nutrient solution replenishment. New and improved wetting agent and hydrophilic technology greatly enhances the water characteristics giving even better water distribution over the height of the block. This results in greater plant development and steerability and more efficient use of water and nutrients. All while the Gro Block Improved maintains