MightyJet 326 GPH Return Pump noise.

[Fishcrisp]

I bought IM nuvo 20 about weeks,it came with the MightyJet 326 GPH Return Pump,but i have to say is really noisy is this normal? Does it need more time to break in?

 

[Water Dog]

Have you broken it down for a cleaning and checked the impeller, making sure the bushings are seated properly? I’ve had mine running as a media reactor feed pump at 100% for several years and it’s still whisper quiet.