Grodan Gro-Block Improved GR6.5 Small 4'' (4''x4''x2.6'') | Case of 216 unwrapped PLANT CARE In many cases

In many cases

UIS Smart Controller Dimmable Driver: 0-10V dimming pairs with AC Infinity Controller 69 Pro for auto-schedules

Ideal for large or multi-room grow setups

Selectable internal lockouts

820" ID before cutting the run

Grodan Gro-Block Improved GR6.5 Small 4'' (4''x4''x2.6'') | Case of 216 unwrapped PLANT CARE In many casesGrodan 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