Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - Case of 144 Coco Mats 8µmol/J 120-277V 1200W 33

8µmol/J 120-277V 1200W 33

with double-lined ducting ports and tight seals on the zippers and corners

RAW Silica supplies high levels of potassium and silicon to help plants build stronger cell walls

and irrigation system injections

Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - Case of 144 Coco Mats 8µmol/J 120-277V 1200W 33New and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water