To my expereince with aero you have to way to go with the pumps, going all the time or using a recycle timer that lets you spray like 1min on, four mins off(recommended). The best results would be to use the timer but turning your pump on and off like that works the shit out of it and your putting yourself in a position for pump failure and then your just fucked if you dont catch it! I run min all the time and think it's pretty dam good way to go.
Couple of things to watch for is to make sure whatever you are using as a root chamber needs to be 100% light proof and I would think about using hydroguard, or companion or h202, cause its a perfect place for funk to develope!
Watch your ppm too, because of it's efficiency you usually dont need as high of nutes as what you would use in hydro. good luck