Grodan Gro-Block Improved GR6.5 Small with Hole, Unwrapped, 4" x 4" x 2.5" - Case of 216 Rockwool Slabs Place in a hole of

Place in a hole of the rooting medium to avoid rubbing Root-Gel off cutting

HGDPB3X3 - 34" x 34" x 12" - 60

Plunger & spacer: 430F stainless steel

Pressure compensation enables the use of longer laterals with smaller diameter tubing

Grodan Gro-Block Improved GR6.5 Small with Hole, Unwrapped, 4" x 4" x 2.5" - Case of 216 Rockwool Slabs Place in a hole ofNew 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