Grodan Gro-Block Improved GR6.5 Small 4'' (4''x4''x2.6'') | Case of 216 unwrapped Cal Mag Additives Ideal as a ducting accessory

Ideal as a ducting accessory for climate control builds where stable temps and humidity matter

Some companies focus on maximizing cost per gallon versus plant health

This flexibility allows for impeccable leaf coverage

so if a room overheats the controller auto-dims or shuts that zone down to protect the crop

WELCOME TO THE NEXT GENERATION OF GROW TENTS

Grodan Gro-Block Improved GR6.5 Small 4'' (4''x4''x2.6'') | Case of 216 unwrapped Cal Mag Additives Ideal as a ducting accessoryGrodan Gro Block Improved 4x4 for Precision Growing These stone wool blocks feature advanced wetting technology for even water content and EC throughout the entire substrate, enabling faster rooting in and consistent plant development. The optimized fiber structure supports stronger roots that fully explore the block, improving water and nutrient uptake while reducing overall inputs. Backed by collaboration with Wageningen University & Research and