Rockwool, a lightweight hydroponic substrate is made from spinning molten basaltic rock into fine fibers which are then formed into a range of cubes, blocks, growing slabs and granular products.
16 Plant FloraCap Irrigation Kit | Substrate Not Included
More sustainable substrates are now equal to peat and rock wool
Rockwool as a substrate for plants
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uper serres tomate système hydroponique substrat laine de roche cubes laine de roche agricole avec anneau
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Grodan rockwool substrates offer growers more control – Hort Americas