What is the most quiet return pumps?

[sphelps]

Originally Posted by BlueAbyss

I'm ordering one of the new Tunze Silence pumps... the one I'm ordering is too small for what you'd need, but they do have a new synchronous electronic pump that draws 120W and pumps 2192gph. It's called the Master Electronic. http://www.tunze.com/149.html?&L=1&C...-infoxunter051

The master electronic looks pretty similar to a quiet one, especially the impeller, I wouldn't expect it to be very quiet.