Grodan Gro-Block Improved GR22, Jumbo, 6 x 6 x 4, Case of 64 Nutrient Kits & Accessories so a case draws down

so a case draws down across months

This atmosphere oxidizes contaminants in the air with friendly oxidizers

Must Stick to MAP Pricing

Proven Performance: Trusted by the world's top cultivators

6 GPM Flow: Moves real volume for fast

Grodan Gro-Block Improved GR22, Jumbo, 6 x 6 x 4, Case of 64 Nutrient Kits & Accessories so a case draws downGrodan 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