Grodan Gro-Block Improved GR7.5, 4" x 4" x 3" (Case of 192) featured but for the cleanliness maintained

but for the cleanliness maintained during manufacturing

35% H2O2 is a strong oxidizer and must be handled with care

Attaches directly to your bin during colonization and is replaced by the traditional lid during the fruiting phase

Convenience and Portability: The light fixture sports a foldable design for easy transportation and compact storage

maintaining leafy greens

Grodan Gro-Block Improved GR7.5, 4" x 4" x 3" (Case of 192) featured but for the cleanliness maintainedGrodan Gro Block Improved GR7. 5 Medium with Hole, 4" x 4" x 3" Case of 192 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