Grodan® Gro-Block® Improved GR32 Hugo with Hole, 6" x 6" x 6" (Single Block)

Give mature plants a uniform 6-inch stonewool root zone

The Grodan® Gro-Block® Improved GR32 Hugo is a single 6" × 6" × 6" stonewool growing block with a planting hole for a 1.5-inch A-OK starter plug or Macroplug. Its Advanced Wetting Technology is designed to distribute water and nutrients more evenly through the block, helping growers manage moisture and EC across the root zone.

• Single Hugo block: Large enough for many vegetables and some fruiting plants through the full crop cycle.
• Consistent wetting: Uniform water distribution helps reduce dry spots and makes better use of the substrate volume.
• Starter-plug ready: The hole fits a rooted 1.5-inch A-OK starter plug or Macroplug.
• Better crop control: Stonewool gives growers a measurable root zone for managing water content and nutrient strength.
• Wrapped format: This single-block listing is supplied with the plastic covering shown for the wrapped version.

Basic setup

1. Saturate the block with an appropriate nutrient solution, following Grodan’s crop-specific preparation guidance.
2. Measure the wet block and monitor water content, EC, and plant response throughout the cycle.
3. Insert a well-rooted starter plug into the hole and connect irrigation suited to your system.

Use the irrigation volumes, EC, pH, and timing recommended for your crop and growing environment. A strong choice for hydroponic growers who want a large, controllable stonewool block from propagation through harvest.