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Stone wool block from the Grodan Improved range.
The Grodan Improved Gro-Block GRI10 is a professional stone wool growing block measuring 100 x 100 x 100 mm, featuring a planting hole with a diameter of 40 mm and a depth of 40 mm. With its larger substrate volume of 1 litre, this block provides generous space for root development and precise root-zone management in professional hydroponic cultivation.
The Grodan Improved product line combines an optimised fibre structure with Advanced Wetting Agent technology. This technology enables uniform distribution of water and nutrients throughout the entire substrate volume, allowing precise management of water content (WC) and electrical conductivity (EC).
The improved water distribution supports fast and consistent root development, allowing plants to utilise the available substrate volume efficiently. The larger root volume provides additional opportunities for managing irrigation, moisture levels and nutrient availability.
The GRI10 is particularly suitable for professional growing systems using vegetative and generative crop steering strategies. Its planting hole accommodates 40 mm Grodan Mini-Blocks and other compatible propagation blocks. The growing block can be used individually or combined with suitable Grodan Gro-Slabs.
