Developed from industrial insulation, hydroponic rockwool is used in the majority of large-scale grow operations. The binding agents used in hydroponic rockwool ensure easy manipulation and disposal of the growth medium. Good 2 Grow recommends soaking G2G rockwool in a pH 5.5 solution for a period of 24 hours before usage in order to condition the substrate to appropriate pH levels and remove any excess silt from the medium. Good 2 Grow’s rockwool is customizable to the client’s needs. All Good 2 Grow soil substrates meet regulatory requirements