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

Red light 660nm

ornamental and garden plants grown indoors* or outdoors

and secondary nutrient conditions your plants for robust growth

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

and a 2-door shutter that blocks attic air from flowing into your home when the fan is not in use

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