Flow Rate Closed/Open Systems

[kien]

Originally Posted by Myka

I edited my post. I don't recommend Mag pumps for anything other than mixing salt. They are noisy and I have had trouble with them not restarting after power outs.

I have 4 powerheads and a Wavebox in my 90.

Perhaps the older ones were louder? I run a mag 12 and a mag 18 in the return chamber of my sump and I can't hear them and no one that has come over has made mention of their noise. Perhaps they are louder outside of the water? Prior to running the mag18 I ran a QuietOne3000 which was anything but quiet. Damn that thing was noisy, even muffled by the water I could still hear it.