L/F Mag 12

I agree with installman. You cant hear mine. I guess you can run them as an external and they might be noise then but as an internal its very quite
 
My mag 12 was a noisy thing, I was running it externally though. I'm sure had it been in the sump it was have much much quieter.
 
They tend to generate a bit of heat too. I use a mag 3 for mixing salt water. It keeps 15g of water in a Brute just under 80 degrees.
 
I think for the price they're great pumps. Only other return pump I ran for awhile was a tunze silence 1073.02, I bought it used but it was a great pump. I'd also really like to try another DC pump or a water blaster pump.
 
As long as it's a workhorse. Any noise shouldn't be a problem since mine will be in a closet. From what Kory says, it seems like a free heater : )
 
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