Grodan Gro-Block Improved GR22 Jumbo (6x6x4) w/ Hole CLONING SOLUTION and unparalleled safety

and unparalleled safety

These include pre-treatment for the reverse osmosis system

Units Per Strip: 8

Discover why so many people prefer our pruners to all others

Comes with two Micro USB Cables for power

Grodan Gro-Block Improved GR22 Jumbo (6x6x4) w/ Hole CLONING SOLUTION and unparalleled safetyGrodan Improved GR22 Jumbo 6"x6"x4" Gro Blocks optimized wool structure allows for faster rooting in and nutrient solution replenishment. New and improved wetting agent and hydrophilic technology greatly enhances the water characteristics giving even better water distribution over the height of the block. This results in greater plant development and steerability and more efficient use of water and nutrients. All while the Gro Block Improved maintains