Grodan Gro Block Improved GR4 Small 3" w Hole 3" x 3" x 2.6" Strip Unwrapped (Case of 48 Sleeves) Big Time Hydroponics New Millenium Decision is most AI58020 New Millenium Decision is most commonly used as a standalone fertilizer to initiate rapid flowering response and development during the transitional phase from vegetative to reproductive growth You’ll be able to easily find what you’re looking for as you pull it out of deep storage 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 Grodan’s Advanced Wetting Agent