Grodan Gro-Block Improved GR32, Hugo, 6 x 6 x 6, Case of 64 Silicas so the container manages itself

so the container manages itself instead of needing daily lid cracks

Cation Exchange Enhancer for Vigorous Vegetative Growth

Perlite - horticultural grade & Vermiculite

The double overwrap protects the master case

Grodan Gro-Block Improved GR32, Hugo, 6 x 6 x 6, Case of 64 Silicas so the container manages itselfGrodan 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