Grodan Gro-Block Improved GR10 Large with Hole, 4" x 4" x 4" (Case of 144) Gateway Supply UPC Code: 816731014533

UPC Code: 816731014533

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Grodan Gro-Block Improved GR10 Large with Hole, 4" x 4" x 4" (Case of 144) Gateway Supply UPC Code: 816731014533Grodan Gro Block Improved GR10 Large with Hole, 4" x 4" x 4" Case of 144 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 entire substrate