The Industry Standard for Large-Format Stonewool Cultivation

The Grodan® Gro-Block Big Mama Improved is the go-to substrate for commercial growers running large-format hydroponic systems. At 8"x8"x8", this no-hole block delivers exceptional water retention, superior aeration, and consistent performance from transplant through harvest.

Key Features

• 8" x 8" x 8" format — ideal for large plants and long-cycle crops
• No-hole design for flexible transplanting and custom planting configurations
• Improved stonewool formula with enhanced wetting technology for faster, more uniform saturation
• Optimal air-to-water ratio supports vigorous root development and oxygen availability
• Consistent fiber structure ensures uniform water distribution throughout the block
• Reusable and recyclable — part of Grodan’s sustainable growing program

What’s Included

Case of 18 blocks. Each block is individually wrapped for cleanliness and ease of handling.