Grodan Improved GR40 Uniblock 8" x 8" x 4" (Case of 36) Grow Tents Use within 2 years of

Use within 2 years of purchase

Absolutely no tools required

Containing top-quality ingredients

Additional settings measure air quality for breathing

removing the sticker on the lid

Grodan Improved GR40 Uniblock 8" x 8" x 4" (Case of 36) Grow Tents Use within 2 years ofGrodan 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