noisy mag

Aquarist007 · 04/30/2007, 10:26 AM

I changed my sump and fuge to the basement under my tank. I had to upgrade my pump for 12feet of head so I purchased a mag3600. Great little pump but far too noisy. Is there a way to make this pump a lot quieter?
Capn_H

csb · 04/30/2007, 10:50 AM

I have a mag pump on my sump return and it's the noisiest component of the tank ... I think the noise is generated by vibrations from the impeller.

When I remove the impeller and spin it in my hand, it's quite obvious that it's not well balanced when spinning. I ended up ordering a replacement impeller, but even the new replacement was poorly balanced, so I'm still running the original impeller.

I think that's the trick to quieting down these pumps... you'll need to find an impeller that spins true and balanced... and the only way to do that is by purchasing a few impellers and testing each one to get one that's actually right. Cheap parts I guess... a good quality manufactured impeller should be absolutely true and balanced to begin with, IMHO.

--csb

04/30/2007, 10:26 AM	#1
Aquarist007 Registered Member Join Date: Apr 2007 Location: Hamilton, Canada Posts: 28,240 Blog Entries: 1	noisy mag I changed my sump and fuge to the basement under my tank. I had to upgrade my pump for 12feet of head so I purchased a mag3600. Great little pump but far too noisy. Is there a way to make this pump a lot quieter? Capn_H __________________ I prefer my substrates stirred but not shaken Current Tank Info: 150gal long mixed reef, 90gal sump, 60 gal refugium with 200 lbs live rock

04/30/2007, 10:50 AM	#2
csb Registered Member Join Date: Jan 2006 Location: New Hampshire Posts: 541	I have a mag pump on my sump return and it's the noisiest component of the tank ... I think the noise is generated by vibrations from the impeller. When I remove the impeller and spin it in my hand, it's quite obvious that it's not well balanced when spinning. I ended up ordering a replacement impeller, but even the new replacement was poorly balanced, so I'm still running the original impeller. I think that's the trick to quieting down these pumps... you'll need to find an impeller that spins true and balanced... and the only way to do that is by purchasing a few impellers and testing each one to get one that's actually right. Cheap parts I guess... a good quality manufactured impeller should be absolutely true and balanced to begin with, IMHO. --csb __________________ Winter ski bum, summer reef bum. Tank pics at http://picasaweb.google.com/snojrnl Current Tank Info: 30g mixed reef