Aeroponics Question

Just starting to build a new aeroponics system and I was wondering if the fogger heads should run constantly or if I should install a repeat cycle timer and have them run for a couple of minutes then have a couple of minute drain back time?

Ive read Earls threads and I think he had them on cycles .. Look up his threads Its a good place to search for your answer

10 minutes on, every two hours; works for every plant I have ever grown in aero. I have used aero/dwc hybrids with this, and a home built pvc fence post system with strawberries that are doing great. I oxygenate all my nute solutions in addtion to any other methods, seems to prolong nute stability and keep out certain uglies that compete for food in the roots.