Once seeds or cuttings are rooted in a propagation cube, transplant them to a Grodan Delta cube. 3" and 4" cubes are ideal for use in NFT, slab culture, dripper or Ebb & Flood systems. 6? Hugo cube can be used for deep Ebb & Flood tables or passive pot culture.

The benefits of Grodan rockwool

 Completely sterile and inert - ideal hydroponic growing medium. Reduced risk of pests and disease.

 Even root growth - predominantly vertical fibre structure means identical levels of resistance for each root, so roots grow evenly.

 Increased root development - structure of the rockwool is designed for optimum air / water balance and accelerated rooting.

 Uniformity - quality and structure is uniform, so water content and EC (CF) will remain the same for every plant.

 Re-wetting - Grodan rockwool is easy to re-saturate if it dries out, reducing the risk of root damage