Grodan Gro-Block Improved GR7.5, 4" x 4" x 3" (Case of 192) featured Attaches directly to your bin

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

maintaining leafy greens

Features the CLOUDLINE inline fan with a PWM-controlled EC motor for quiet and energy efficient ventilation

72 Item Weight Item Weight 36 pounds 32

Double ended metal halide lamps are not designed to be run for 24 hours a day

Grodan Gro-Block Improved GR7.5, 4" x 4" x 3" (Case of 192) featured Attaches directly to your binGrodan 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