Dimmer Switches

[Rikko]

I don't think that works (safely?).. I did a bunch of research on that a while back and it sounded like powerheads are frequency-dependent and not voltage-dependent. To actually SLOW DOWN a powerhead requires a frequency dimmer - something that exists but appears to be far less common and more expensive. Choking back the voltage seems to act... differently.. though clearly Gizmo has it doing something I wouldn't have thought possible.