Grodan Improved Gro-Block GRI32 Hugo 40/40 – Growing Block 15 x 15 x 14.2 cm

The Grodan Improved Gro-Block GRI32 Hugo is a professional stone wool growing block measuring 150 x 150 x 142 mm, featuring a planting hole with a diameter of 40 mm and a depth of 40 mm. With its generous substrate volume of approximately 3.2 litres, this large growing block provides extensive space for root development and precise root-zone management.

The Grodan Improved product line combines an optimised fibre structure with Advanced Wetting Agent technology. This provides more uniform water distribution throughout the full height of the block, supporting consistent water content (WC) and electrical conductivity (EC).

Improved wetting performance and substrate structure encourage rapid and uniform root development. Roots can efficiently utilise the available growing medium while growers maintain precise control over moisture levels and nutrient availability.

Thanks to its large root volume and excellent control over WC and EC, the GRI32 Hugo is particularly suitable for professional hydroponic cultivation and vegetative and generative crop steering strategies. The block is suitable for individual plants and can be used in controlled growing systems with drip irrigation.

Benefits

• Large substrate volume of approximately 3.2 litres
• Optimised fibre structure with Advanced Wetting Agent
• Uniform water distribution throughout the block height
• Consistent water content (WC) and stable EC behaviour
• Supports fast and uniform root development
• Efficient utilisation of the available substrate volume
• Precise irrigation and nutrient management
• Suitable for vegetative and generative crop steering
• Planting hole for compatible 40 mm propagation blocks
• Ideal for professional drip irrigation growing systems

Product Specifications

• Brand: Grodan
• Product line: Improved Gro-Block
• Type: GRI32 Hugo 40/40
• Material: Stone wool
• Dimensions: 150 x 150 x 142 mm
• Substrate volume: approximately 3.2 litres
• Planting hole: 40 mm diameter x 40 mm depth
• Manufacturer article number: 360185
• Sales unit: 1 growing block
• Application: Professional hydroponics and crop steering