Premium Cultiwool Substrate Blocks 4"x4"x2.5" - Hydroponic Growing Medium for Plants - Ideal for Indoor Gardening, Greenhouses & Vertical Farming Systems

Cultiwool 4'' x 4'' x 2.5'' Blocks are commercial fabric blocks designed to grow crops in greenhouses and hydroponic operations. The fiber structure provides a superb air-to-water ratio, holds water longer, and enhances initial rooting. 

Features

• Superb air-to-water ratio
• A fiber structure that holds water longer
• Less resistance for the roots to grow in the block, resulting in better roots for "fragile" crops
• Fiber structure enhances faster initial rooting
• All products are uniform & comparable with each other
• Guaranteed firmness
• Sold & priced per case of 216 blocks