Grodan Improved GR40 Uniblock 8" x 8" x 4" (Case of 36) Grow Tents Up to 8 on/off cycles

Up to 8 on/off cycles per day

pets and plants

Our optics also exceed international drop ball test standards

allowing extremely quiet operation

Additional settings measure air quality for breathing

Grodan Improved GR40 Uniblock 8" x 8" x 4" (Case of 36) Grow Tents Up to 8 on/off cyclesGrodan 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