Grodan Gro Block Improved GR4 - 3' w/ hole (3x3x2.6) (Commercial case - no shrinkwrap) Grow Guide dark line that stays clear

dark line that stays clear season after season

Power Requirements: Designed for 110-volt outlets

For a room or a warehouse

Isobutane: <1500ppm

This formula is your gateway to a garden brimming with vibrant flowers and luscious fruits

Grodan Gro Block Improved GR4 - 3' w/ hole (3x3x2.6) (Commercial case - no shrinkwrap) Grow Guide dark line that stays clearGrodan Gro Block Improved GR4 3' w hole (3x3x2. 6) (Commercial case no shrinkwrap) Introducing the newly improved Grodan Gro Block GR4 a revolutionary solution for modern growers. Our state of the art growing block is designed to deliver an unparalleled horticultural experience by focusing on the core factors that influence plant growth: water distribution and root development. New Density & Hydrophilic Technology: The Grodan Gro Block boasts a newly