Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Strip of 6 375ml use Rock Rootinator throughout the

use Rock Rootinator throughout the entire growth and bloom cycle at the rate of 4mL per gallon for normal plant maintenance

Our mash paddles are hand made from Michigan hard maple trees

Tech Guide (PDF)Product Manual (PDF)

The white powder-coated steel housing will last for many seasons

minimum levels

Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" Strip of 6 375ml use Rock Rootinator throughout theGrodan Improved Gro Block Improved GR6. 5 Small 4" w Hole, 4" x 4" x 2. 6" Strip Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro Blocks Improved with Grodans Advanced Wetting Agent. These leading edge blocks have