Grodan Improved Gro-Block, Jumbo 6" x 6" x 4", Case of 64 rockwool Hydrofarm's Powerhouse convertible ballasts feature

Hydrofarm's Powerhouse convertible ballasts feature engineered transformers made to the exacting American National Standards Institute specifications

Drive belts last many hours but eventually wear down

Carbon Steel Blade/Aluminum Handle

BPA-free and UV resistant

chemical-resistant pump configuration designed to handle abusive

Grodan Improved Gro-Block, Jumbo 6" x 6" x 4", Case of 64 rockwool Hydrofarm's Powerhouse convertible ballasts featureGrodan Improved Jumbo (White Foil) 6 x 6 x 4 (Case of 64) Grodan Improved 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. These leading edge blocks have the