Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - Case of 144 Coco Mats with double-lined ducting ports and

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

cytoplasm/cell wall 5%

Wide pH Range: measure pH from 0

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

8µmol/J 120-277V 1200W 33

Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - Case of 144 Coco Mats with double-lined ducting ports andNew 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