Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Strip- Unwrapped (Case of 48 Sleeves) Voodoo Juice In a controlled garden environment

In a controlled garden environment

Adding healthy bacteria and fungi to your grow increases nutrient uptake

Ultimate PK is specially designed to act as a hardener

Bio-Bloom also works in harmony with the soil to promote flowering and fruit production

Soft Rock Phosphate

Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Strip- Unwrapped (Case of 48 Sleeves) Voodoo Juice In a controlled garden environmentGrodan 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