1 inch Rockwool cubes

1 inch Rockwool cuttings cubes. Available individually or in a tray of 77.They combine efficiency in terms of both crop growth and plant handling. SBS 1" rockwool blocks are supplied in a specially manufactured black tray which excludes light from the root zone.For info on using rockwool read Integral Hydroponics for useful tips,or Hydroponically Speaking- Cloning