i did'nt water mine as often,until the roots showed through the baskets.i went 15 minutes about every 1 1/2 hours.even now i'm at 15 minutes every two hours or so.i'm not a pro but it works for me.i have an insane amount of roots andthe plants their self look great.only advice i can give is too look through the forums and see whats out there.
Lots of different settings will work, and I think it's relative to how high of a
rate of spray you're putting out and how much of the roots you can cover
in a set amount of time.
Generally speaking for low pressure aero, 1 on 4 off is a good number to go
by as it gives enough oxygen to the roots without letting them dry out too
much. You should be fine to run this time throughout veg/flower.