Grodan Pro Gro-Block Improved GR4 with Hole, 3" x 3" x 2.5" (Case of 384) nutrient-combo delivering superior drainage and creating

delivering superior drainage and creating a healthier root environment

The new Max Yield Bin V2 features a tapered top to reduce the chance of standing water accumulating on the substrate during fruiting

and includes duct clamps for easy installation

850 units/ml

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Grodan Pro Gro-Block Improved GR4 with Hole, 3" x 3" x 2.5" (Case of 384) nutrient-combo delivering superior drainage and creatingGrodan Pro Gro Block Improved GR4 Small with Hole, Unwrapped, 3" x 3" x 2. 5" (Case of 384) New 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. The uniform distribution of water and nutrients throughout the block allows for more efficient use of the