Grodan Gro-Block Improved GR22, Jumbo, 6 x 6 x 4, Case of 64 Nutrient Kits & Accessories Store closed in original packaging

Store closed in original packaging at a temperature between 45 ° F and 85 ° F

and the double-ended architecture keeps light degradation lower over time

6 GPM Flow: Moves real volume for fast

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

Grodan Gro-Block Improved GR22, Jumbo, 6 x 6 x 4, Case of 64 Nutrient Kits & Accessories Store closed in original packagingGrodan 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