My sump/plumbing is too loud

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FedEXguy

Feeder Fish
MFK Member
May 1, 2012
93
9
8
Arkansas
The video makes it sound way louder than it is in person, but it is still unacceptably loud. I am just setting all of this up on an 8ft 240g and I've never done a sump before so it's all new to me. I had a loud trickle in the overflows so I raised the durso height some and now it is a very minor trickle. The sumps were extremely loud with tons of bubbles so I raised the discharges from the bottom to just below the surface and added a T with an off-shoot standpipe to suck out all of the air. There's a cap on that with a hole in it because otherwise it sounds like a toilet echoing in an empty bathroom. All of these changes cut the sound down by 3-fourths to what is in the vid but it is still too loud. My pumps are Mag 18s and they hum too loudly, too (one more than the other) but they are both clean and undamaged and that's what I'm going to use for now. Any questions? I would love some suggestions so that I can get this thing up and running!
 
Mag are loud humming pumps in general, and get louder with age.
I found if I put a sponge (I use the filter type sponges) underneath the pump, it cuts down the hum slightly, I also put sponges on or abutting any piece of plumbing that touches the sumps side to cut down on vibration hum.
After a while as the Mag pumps wore out (years) I started replacing them with Laguna pumps, because they were quieter and used less energy.
 
Mag are loud humming pumps
I agree that they are loud and at some point I will replace them, but I got a good deal on them so I'm going to use them for awhile. I have sponges under them. More importantly for now, I need to figure out how to quiet down the water entering my sumps. Even with durso and reverse durso, it is quite loud.
 
Get a DC powered pump, soooooo much quieter. Those mag drives are incredibly loud.
 
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Do you mean a battery powered pump?
No. The Jebao, Waveline, etc pumps are all powered via a DC converter brick. They work differently than the AC pumps which alternate the 2 phases to spin the impeller. That 2 phase switching is what causes the vibration. DC pumps have multiple phases so you don't get that "up/down" hop.
 
I had a Quiet One pump that was anything but quiet. I switched to a Jebao DCT12000 and you can't even hear it. It's been running flawlessly for over a year.
 
I have one 1" drain with full siphon with Herbie style (but with third dry e-drain). If I open the gate valve up I'd get the same noise with water entering the sump. You have two larger drains presumably running full siphon.

I know folks want massive turnover, but you may want to consider reducing the flow to the sump be closing your ball valves a bit more. I like using gate valves for that reason, but ball should be ok. It takes a bit experimentation to strike the balance between drain to return giving you desired turnover, while keeping things from sounding like a shower.

I have an internal overflow draining to sump with two DC pumps - all in the living room, so can appreciate keeping things silent ;-)
 
I have one 1" drain with full siphon...
Yeah, my drains are 1.5" so they can handle a lot of water but I've already throttled back the pumps as far as I can without them starting to cavitate and be even more noisy. I'm starting to think that I just have too much pump for my application.
 
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