Grodan Improved GR10 (White Foil) 4" x 4" x 4", 1,584 Blocks Loose on Pallet Brand nutrients Can be use by itself

Can be use by itself or together with other fertilizers

Ability to for recipes with up to 6 nutrients

- Grow journal

Product specs: 16

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Grodan Improved GR10 (White Foil) 4" x 4" x 4", 1,584 Blocks Loose on Pallet Brand nutrients Can be use by itselfGrodan Improved GR10 (White Foil) 4 x 4 x 4 (1584 blocks Loose on Pallet) Grodan Improved 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 our Advanced Wetting Agent. These leading edge blocks