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  1. Grodan Slab

    Price:  5,00CHF

    Grodan produces rockwool substrate from natural volcanic rock by this is liquefied by high heat and pressed through fine nozzles.
    Rockwool provides an excellent balance between nutritient and oxygen and is also very easy to carry. Thanks to these properties rockwool substrate in its various forms is the most used medium in professional plant breeding.

    Grodan Slabs offer the advantage, that no additional pot is required. Simply cut the desired number of windows in the foil - finish.
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