Powerhead night mode -- useful or marketing gimmick?

[tzink]

Just got an MP10. A lot of powerheads have night mode to slow the flow at night. I don't really understand this. It's not as if waves in the ocean are calmer at night (right??)

Any use to this? Or just marketing crap?

[rimga123]

Not sure if its just a coincidence 

But whenever i would go rock pooling, water is always much calmer early in the morning than compared at a lunch time.

I do use night mode, i feel like the inhabitants may be less stressed not being blasted with flow in the middle of the night and the powerhead works more quiet, my tank is in my bedroom so i am trying to keep the noise to the minimum

 

Edited: I am also curious to see what others think about the night mode.

[Nixperience]

Actually, the ocean does get calmer at night. 

[M. Tournesol]

As @rimga123, my tanks are in my bedroom.

[Fant]

The wind usually lays down at night. Probably were this idea comes from. Your tidal currents don't change all that much day vs night.