Grodan Gro-Block Improved GR6.5 Small 4'' (4''x4''x2.6'') | Case of 216 unwrapped PLANT CARE Ideal for large or multi-room

Ideal for large or multi-room grow setups

820" ID before cutting the run

Each unwrapped strip contains 45 blocks—50 strips per case—for efficient bench-level handling and high-volume starts

Ancora is labeled for use on a broad spectrum of plants including herbs

Grodan Gro-Block Improved GR6.5 Small 4'' (4''x4''x2.6'') | Case of 216 unwrapped PLANT CARE Ideal for large or multi-roomGrodan 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