Grodan Improved Gro-Block GRI6.5 40/40 – Growing Block 10 x 10 x 6.5 cm

The Grodan Improved Gro-Block GRI6.5 is a professional stone wool growing block measuring 100 x 100 x 65 mm, featuring a large planting hole with a diameter of 40 mm and a depth of 40 mm. The block is designed for uniform 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 promotes 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 rapid and consistent root development. Plants can efficiently utilise the available substrate volume, promoting a strong root system and uniform plant growth.

Thanks to precise control over WC and EC, the Grodan Improved GRI6.5 is particularly suitable for vegetative and generative crop steering strategies. The large planting hole accommodates Grodan Mini-Blocks measuring 40 mm and other compatible propagation blocks. For further plant development, the block can be combined with Grodan Gro-Slabs and other suitable stone wool growing slabs.

Benefits

• Optimised fibre structure with Advanced Wetting Agent
• Uniform distribution of water and nutrients
• Consistent water content (WC) and stable EC distribution
• Supports rapid and uniform root development
• Efficient utilisation of the entire substrate volume
• Precise irrigation and nutrient management
• Suitable for vegetative and generative crop steering
• Large planting hole for compatible 40 mm Mini-Blocks

Product Specifications

• Brand: Grodan
• Product line: Improved Gro-Block
• Type: GRI6.5 40/40
• Material: Stone wool
• Dimensions: 100 x 100 x 65 mm
• Planting hole: 40 mm diameter x 40 mm depth
• Manufacturer article number: 354424
• Sales unit: 1 growing block
• Application: Professional plant propagation and hydroponics