Exact Air, Finally Air Everywhere in the Slab Video
Exact Air is going to be a new standard for crops on stonewool. Because of the Gradient Technology the density of the stonewool increases evenly from the bottom to the top. Hence, the vertical differences of the Water Content, EC, pH and O2- level have never been less.
The bottom of the slab is no longer always at 100% water content. After drainage of the excess water and nutrients, the water content at the bottom drops quickly back to 90%. This gives a higher percentage of roots with hairs and less water roots.