Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Wrapped (Sleeve of 6) Pure Zym increases size and yield of

increases size and yield of harvest

It is mainly used in the blending of dry agricultural fertilizers

25 sq ft of tray space

Durable and reliable

90% of Iron

Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip - Wrapped (Sleeve of 6) Pure Zym increases size and yield ofGrodan 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