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extending the root system's reach and improving access to water and nutrients — particularly phosphorus
25" deep media holes are optimally sized for starting herbs
The spring-loaded antidraft damper is built for heavy-duty performance in applications like overhead range hoods in kitchens
Mix 1/2–2 tsp
ensuring its proper functioning in heavy humidity without inhibiting its lifespan
Grodan Gro-Block Improved GR22 Jumbo with Hole, 6" x 6" x 4" (Case of 64) lamps extending the root system's reachGrodan Gro Block Improved GR22 Jumbo with Hole, 6" x 6" x 4" Case of 64 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