Grodan Improved GR40 Uniblock, 8" x 8" x 4", case of 36 Water Pumps & Irrigation Supplies Red light 660nm

Red light 660nm

1-inch Cut

We listened and learned from your input - now you can reap the benefits with this durable

the oil will evaporate in about 20-30 minutes

The Grow1 DWC 4 Bucket + Reservoir Complete Kit includes everything you need for a complete hydroponic system

Grodan Improved GR40 Uniblock, 8" x 8" x 4", case of 36 Water Pumps & Irrigation Supplies Red light 660nmGrodan Improved Uniblock GR40, 8" x 8" x 4" 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 the optimal fiber structure and