you can turn powerheads like the koralia on and off, though it is far from a wavemaker. turning them on and off quickly will kill the pumps over time. I use the feature to alternate two pumps in the display every 30 minutes, works great.
Vortechs are pretty good for use. Koralia has controllable powerheads and a wavemaker system. But using a controller for just regular powerheads is probably not the best idea and can possibly burn out the pumps rather quickly.
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