Grodan Improved Gro-Block, Hugo 6" x 6" x 5.8" (Case Of 64) HGC760780 It can be used as

It can be used as wetting agent for nutrient solutions and foliar sprays and is great for flushing excess salts from the root Zone

Compact sized: 31

Large EZ View windows offer easy grow snapshots without compromising your environment

Potassium Carbonate and Potassium Silicate

Grodan Improved Gro-Block, Hugo 6" x 6" x 5.8" (Case Of 64) HGC760780 It can be used asGrodan 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 have the optimal fibre structure and physical properties for crop uniformity, more even