Grodan Gro Block Improved Mini Block 1.5" Strip -Shrink Wrapped (Sleeve of 45) GAC round air stone disc sizes

round air stone disc sizes

high-efficiency and made from environmentally-responsible recycled resins

Acts as a soil sweetener (raises pH) while providing calcium and magnesium

These highly reliable CO2 generators feature powder-coated steel enclosures that resist moisture

porosity and high cation-exchange capacity

Grodan Gro Block Improved Mini Block 1.5" Strip -Shrink Wrapped (Sleeve of 45) GAC round air stone disc sizesGrodan 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 Grodans Advanced Wetting Agent. These leading edge blocks have the optimal fiber structure and physical properties for crop uniformity, more