On off, like just about any other thing that plugs into the wall
and variable like 40/50/60%(Module needed)
The question was posed to me today could you turn a powerhead on and off quickly to create a wave, or at least varying current in the tank.
Since the ApexJr can turn the powerhead on one second and off the next, I would think that part is possible.
Here is the worry that i have. Some powerheads have clutches to make sure they spin a certain way(AC) I have heard others have some sort of brakes?
So what powerhead could you use in the on off on fashion without breaking something, and not cutting down on life expectancy.
The powerhead that was in question was a Korali 1050gph.
Lastly, one idea I had was to power on 5 seconds, then off for 1, so the impeller wouldn't completely stop, kind of bypassing the problem with AC powerheads.
So what do you think?