I have mine set as follows:
Pump 1: Permanent, Right angled waves, short and .9 seconds duration with no random reduction.
Pump 2: SAME, but Permanent opposite.
Pump 1 is set at 100 and 30 percent
Pump 2 is set a 99 and 31 percent
I also have them set to diminish at night 60 percent from 11:00 to 10:00.
I get a GREAT wave. I have one Tunze near the top of the tank and one in the middle on the opposite wall. The tangs love the current.