Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip of 6 robustporter durability and easy cleaning

durability and easy cleaning

Signal Word: Non-Regulated Material

6 ft and 8 ft stakes cannot be shipped UPS Ground

you can use these screens to get the most out of your extraction experience

Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip of 6 robustporter durability and easy cleaningProduct Details Grodan Improved Gro Block Improved GR10 Large 4" w Hole 4" x 4" x 4" Shrink wrapped Strip 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