Grodan Improved Gro-Block GR4 Strip 3" x 3" x 2.6", with Hole | Case of 48 Deep Water Culture | DWC Comes with instructional videos and

Comes with instructional videos and guides

This LED grow system uses the latest Samsung LM301H diodes to efficiently produce full-spectrum lighting fit for use during the germination

Ideal for users that do not calibrate frequently

Pressure:  3

Grodan Improved Gro-Block GR4 Strip 3" x 3" x 2.6", with Hole | Case of 48 Deep Water Culture | DWC Comes with instructional videos andGrodan Improved Gro Block GR4 Strip 3" x 3" x 2. 6", with Hole Grodan's Improved Gro Blocks utilize improved hydrophilic technology and density for better water distribution and root development. Non Shrink Wrapped. Available with pre cut holes for easy planting. Block Size: 3in x 3in x 2. 6in Strip Size: 24" x 3in x 2. 6in. Blocks Strip: 8