Grodan Gro Block Improved GR6.5 Small 4" w/Hole 4" x 4" x 2.6" Strip bio-organic fertilizer rot and mildew resistant

rot and mildew resistant

and magnet

Lithium Ion Battery lasts up to 1 hour on a single charge

plant temperature – and thus the vapor pressure deficit – can be achieved

the tent offers a streamlined mechanism for intake and exhaust management

Grodan Gro Block Improved GR6.5 Small 4" w/Hole 4" x 4" x 2.6" Strip bio-organic fertilizer rot and mildew resistantDescription Product Details: Grodan Improved Gro Block Improved GR6. 5 Small 4" withHole, 4" x 4" x 2. 6" Strip 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