Grodan Gro-Block Improved GR10 Large with Hole, 4" x 4" x 4" - Pallet of 1584 Select Rockwool Type:GR10 w/ Hole 4" x 4" x 4" - Pallet of 1,584 Slim profile

Slim profile

faster growth

Tomato Hornworm

it has been determined that this pump can be used as a replacement for the 30

FITS PRACTICALLY ANYWHERE

Grodan Gro-Block Improved GR10 Large with Hole, 4" x 4" x 4" - Pallet of 1584 Select Rockwool Type:GR10 w/ Hole 4" x 4" x 4" - Pallet of 1,584 Slim profileNew 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