RW cubes
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22 items total
Rockwool cubes are a practical and recyclable growing medium.
It is made of basalt wool and calcium by melting in an oven at 1500 ° C.
This process creates "stone" lava, which is further processed into thin fibers and then pressed into the desired shape.
Thanks to this process, the growing medium is completely sterile and has an excellent absorption properties and a balanced ratio of water and air.