Testing Stone Wool

classroom 2

The most important characteristic of a quality stone wool product is uniform water distribution throughout the wool. Choose a sturdy product that can maintain its form and allows for fast and complete nutrient distribution. These factors encourage faster and more thorough root growth throughout the media.

Use the Rooting Test and the Blue Dye Test to judge the quality of water and root distribution in the stone wool that you use. 

Test different brands of stone wool, side-by-side and examine the difference first hand. Which ones provide faster growing plants with more thorough root distribution?

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