Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Unwrapped (Case of 144 Blocks) Flat 2 Way Manifold 0 uses it’s powerful oxidation

0 uses it’s powerful oxidation reaction to kill bacteria

Like the other ECS kits

potassium and secondary minerals

When you use this potting mix the miniature cubes stack on top of each other and air pockets are created throughout the pot

Triact 70 acts as a suffocant

Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Unwrapped (Case of 144 Blocks) Flat 2 Way Manifold 0 uses it’s powerful oxidationGrodan 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 the optimal fiber structure and physical properties for crop uniformity, more