Cultiwool 6x6x6 Hydroponic Grow Blocks with OptiDrain - 48 Pack for Indoor Gardening, Seed Starting & Plant Propagation

Cultiwool 6" x 6" x 6" Growing Blocks w/ Optidrain (48 Blocks/Case)

Cultiwool 6" x 6" x 6" Rockwool Blocks are sold by the case.

Struggling with inconsistent water distribution in your hydroponic growing setup?

The Cultiwool 6" x 6" x 6" Growing Blocks w/ Optidrain deliver superior water uptake and homogeneous distribution throughout the substrate, ensuring optimal growing conditions for your plants.

These premium stonewool blocks are designed for hydroponic growers seeking consistent, reliable growing media with advanced water management features and enhanced drainage capabilities.

Each 150mm x 150mm x 142mm block features rapid water absorption with uniform distribution technology, providing the consistent moisture levels essential for healthy plant development. The innovative design ensures your plants receive optimal hydration without waterlogging or dry spots.

Cultiwool's blocks incorporate cross grooves at the bottom for improved drainage and reduced ground contact, minimizing disease risk from root pathogens. The integrated black/white foil wrapping prevents algae growth while maintaining proper light management. The Optidrain technology provides enhanced drainage performance for optimal root zone conditions.

Built with high-quality European stonewool and featuring industry-first donut ring technology, these blocks provide professional-grade growing media with enhanced dripper placement accuracy and water chamber functionality.

Product Highlights

• Innovative Donut Ring Technology: First-to-market water chamber design for precise dripper placement and superior water distribution
• Optidrain Technology: Enhanced drainage system for optimal root zone conditions and improved plant health
• Drainage Groove System: Bottom grooves improve water flow and reduce disease risk by limiting ground contact
• Algae Prevention: Black/white foil wrapping prevents unwanted algae growth while optimizing light conditions
• Extra Large Cube Design: 6" x 6" x 6" dimensions provide maximum growing space for large-scale plant systems

Cultiwool 6" x 6" x 6" Growing Blocks w/ Optidrain Features

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Donut Ring Technology

Industry-first water chamber design ensures perfect dripper placement and homogeneous water distribution throughout block.

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Optidrain Technology

Advanced drainage system provides optimal root zone conditions and prevents waterlogging for healthier plant development.

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Drainage Groove System

Bottom drain grooves improve water flow and reduce ground contact, minimizing disease risk from pathogens.

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Extra Large Cube Design

6" x 6" x 6" cube dimensions provide maximum growing space for large-scale commercial and hobbyist applications.

Cultiwool 6" x 6" x 6" Growing Blocks w/ Optidrain Specifications