Grodan Gro-Block Improved GR32, Hugo, 6 x 6 x 6, Case of 64 Silicas A galvanized housing stands up

A galvanized housing stands up to demanding grow-room and greenhouse runs

delivering targeted potassium and phosphorus support when plants are building weight and density

High Flow membrane: Every 6 months to 2 years dependent of use and input water quality

2-in-1 Advance Grow Tent 5x4

Cation Exchange Enhancer for Vigorous Vegetative Growth

Grodan Gro-Block Improved GR32, Hugo, 6 x 6 x 6, Case of 64 Silicas A galvanized housing stands upGrodan Improved Hugo (White Foil) 6 x 6 x 5. 8 (Case of 64) Keep it Real Real Science 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. Real Improvement These