Grodan Gro-Block Improved GR22 Jumbo with Hole, 6" x 6" x 4" - Case of 64 Select Rockwool Type:GR10 w/ Hole 4" x 4" x 4" - Pallet of 1,584 is easy to mount

is easy to mount

Dipotassium Phosphate

CO2 consumption has slowed

enhances floral development

Grodan Gro-Block Improved GR22 Jumbo with Hole, 6" x 6" x 4" - Case of 64 Select Rockwool Type:GR10 w/ Hole 4" x 4" x 4" - Pallet of 1,584 is easy to mountNew and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water