These pumps are probably the quietest pumps out there for that kind of flow.
If you want it a tad quieter use the dart, it is nearly silent.
Unfortunatly, you wont find a pump that pushes almost 5000 gph that is absolutley silent...but thats about as close as you get.
Its not only what you put under the pump, it also how its plumbed.
Your closest pipe on the output and the intake should be flex...then you can switch to rigid if you like.
It makes a world of difference.
Marc.
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