Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - PALLET OF 1584 Pots discard and replace nutrient every

discard and replace nutrient every week or two to prevent nutrient imbalance

Can be applied every 7-14 days

membranes and other biochemical processes

soil and coco based systems

Grodan Gro-Block Improved GR10 Large with Hole, Unwrapped, 4" x 4" x 4" - PALLET OF 1584 Pots discard and replace nutrient everyNew 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