Grodan Gro-Block Improved GR32 Hugo with Hole, 6" x 6" x 6" - Pallet of 512 Select Rockwool Type:Mini-Block, 2" - Case of 1440 Available sizes and lengths:

Available sizes and lengths:

Self-tapping barbed inlet for easy installation

We recommend using ½ cup or 4 oz

Suitable for use with reservoirs

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Grodan Gro-Block Improved GR32 Hugo with Hole, 6" x 6" x 6" - Pallet of 512 Select Rockwool Type:Mini-Block, 2" - Case of 1440 Available sizes and lengths: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. 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