Grodan Gro-Block Improved GR22, Jumbo, 6 x 6 x 4, Case of 64 Nutrient Kits & Accessories customizable air circulation that adapts

customizable air circulation that adapts to your plants' needs

The time and money saved from the Quantanium tumbler will be noticed on the first trim

Must Stick to MAP Pricing

6 GPM Flow: Moves real volume for fast

Growers stand it on the floor or mount it on a wall to break up canopy hotspots and even out temperature

Grodan Gro-Block Improved GR22, Jumbo, 6 x 6 x 4, Case of 64 Nutrient Kits & Accessories customizable air circulation that adaptsGrodan Improved Jumbo (White Foil) 6 x 6 x 4 (Case of 64) Keep it Real Real Science Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro Blocks Improved with our Advanced Wetting Agent. Real Improvement These leading