Aeroponic Droplet Size
NASA research has shown that plants are more willing to absorb nutrient water in 10 to 50 microns droplets more effectively than any other sizes. Water droplet size is crucial for sustaining aeroponic growth. Too large of a water droplet means less oxygen is available to the root system. Too fine of a water droplet, such as those generated by the ultrasonic mister, produce excessive root hair without developing a lateral root system for sustained growth in an aeroponic system.
In review, HPAs require high pressure to operate properly for producing the optimal 50 microns droplet size from the misters. Also, HPAs need precise timers that are adjustable down to seconds.
High Tech Gardener