Grodan Improved Gro-Block, Jumbo 6" x 6" x 4", Case of 64 drying-racks 120V motor with rear mounted

120V motor with rear mounted speed controls and comes with a 7' white power cord

The YELLOW side attracts and kills aphids

Clean white light with >90 CRI

More than twice the amount of wool as our Hugo Block

Grodan Improved Gro-Block, Jumbo 6" x 6" x 4", Case of 64 drying-racks 120V motor with rear mountedGrodan 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