Description

Rockal rockwool blocks provide a high-quality rockwool alternative for hydroponic and indoor cultivation. The Cubes are a good size for transition planting or finishing small plants, and they feature a standard-size rockwool macro-plug cutout for easy transplanting of seedling starts. We offer these rockwool blocks for sale individually so you can purchase the right amount to fit your needs.

Features

• High-density material offers ample support and water retention for plants of any size, and ensures that the blocks will maintain their shape during handling.
• Sterile, UV-blocking wrapper protects roots and fits tightly to keep water and nutrients in the root zone. Specially-developed wetting agent provides efficient, uniform saturation and optimized nutrient uptake with a water holding capacity of 85-95%.
• Pre-cut squares ensure perfectly uniform, repeatable spacing for grow blocks-no measuring or guesswork required.
• Rockal Blocks are manufactured from at least 70% recycled material.

Advantages:

• Excellent water holding capacity.
• Higher substrate volume for extra root growth.
• Uniform WC and EC throughout the block. Improved control and steerability.
• Solid base for top-heavy plants.
• Larger yields.

Available Size: