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Rockwool is the main reason that most of the worlds greenhouse vegetables are now grown hydroponically.
At full saturation, Rockwool holds 80-90% of its volume in water. It is wrapped in biodegradable plastic and the Rockwool can be re-used in your garden to improve the aeration and water holding capacity.
For forty years Grodan has been the global market leader in the supply of a wide range of integrated substrate solutions to professional growers endeavouring to achieve the optimum cultivation of high-quality vegetables and plants.
