Description
Grodan Wrapped Cubes are the next stage in the Single Block System. Designed to take the SBS plugs (1 plug per cube), the wrapped cubes are available in various sizes to suit your own requirements. The holes can be filled with other mediums if you prefer not to use the rockwool plugs. The plastic wrapping is designed to be left on the cubes to encourage roots to go down and to keep the cube from falling apart. Once roots have penetrated the bottom of the cube the plants are ready for planting out, (putting on to your hydroponic system). Horticultural grade rockwool is designed specifically for plant production. It differs from insulation and building grade rockwool and glasswool. Its made with varying proportions of both wettable and non-wettable rockwool with the fibres laid in different directions according to its use.
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