Proper oxygen levels in the root system, helps in facilitating nutrient uptake. The RediRoot Aeration Frame is a heavy duty plastic frame with engineered air entry points to introduce oxygen to the root zone. It also provides air pruning of the roots, giving you strong lateral root growth, while reducing thin spiraling roots. RediRoot Aeration Frames incorporate legs at the bottom of the frame to provide air flow under the container. This keeps mold and pathogens from forming at the bottom of the container from overwatering. RediRoot Aeration Frames can be used in ebb & flow systems, as a standalone container or used with RediRoot Cloth Liner.