2" x 2" x 1.5" MM50/40 Rockwool Cube – Strip of 12

Available in strips of 12 blocks or in cases of 1,440 blocks.

The 2" x 2" x 1.5" MM50/40 Rockwool Cube Strip is a professional hydroponic propagation medium designed for starting seeds and rooting cuttings in greenhouse and controlled-environment growing systems. Manufactured from spun basalt stone wool, these cubes provide an ideal balance of moisture retention and oxygen availability to support rapid germination and strong root development. 

Each strip contains 12 uniform cubes, making it easy to seed, handle, and transplant seedlings without disturbing delicate root systems. Once roots develop, the cubes can be placed directly into larger rockwool blocks, net pots, or hydroponic systems such as NFT channels, deep water culture or drip irrigation setups.

Rockwool cubes are widely used in hydroponic and greenhouse production because they are sterile, inert, and nutrient-neutral, allowing growers to maintain precise control over irrigation and nutrient delivery during the early stages of plant growth.

Key Features

• Optimized Air-to-Water Ratio
  The porous stone wool structure retains moisture while maintaining air spaces around the roots, creating ideal conditions for germination and early plant growth.
• Uniform Cube Size for Consistent Growth
  Each cube is manufactured with consistent density and structure to support uniform seedling development and predictable crop timing.
• Convenient Strip Format
  The strip of 12 cubes allows growers to seed efficiently and easily separate cubes for transplanting as plants develop.
• Sterile & Nutrient-Neutral Medium
  Rockwool cubes are pathogen-free and chemically inert, giving growers full control over nutrients and pH levels.
• Compatible with Hydroponic Systems
  Starter cubes can be transferred directly into rockwool blocks, NFT systems, raft systems, drip irrigation setups, or net pots for continued growth.