Mag 12 Noise

[ScubaSteve]

Yes, once you have a little back pressure those noises die down a bit but give it a month or two of running and it will be pretty quiet. Once the biofilm builds up they quiet down. Cut a piece of enolite (camping mat foam) and stick it under the pump. It'll cut down a lot of the hum.

[Baldy]

Is it ok to use the adhesive backed foam that came with the pump submerged on the sump?

[Aquattro]

Originally Posted by TheNewGuy

Is it ok to use the adhesive backed foam that came with the pump submerged on the sump?

Yup, I've had mine in the sump for a year. Doesn't help much though

[Baldy]

So those foams that you get from camping mats are fine to keep submerged? I'm a little worried about introducing contaminants. I was thinking about using filter floss as I have a large roll or maybe a sponge.

[Jakegr]

Styrofoam also works well if placed under the pump.

[ScubaSteve]

Originally Posted by TheNewGuy

So those foams that you get from camping mats are fine to keep submerged? I'm a little worried about introducing contaminants. I was thinking about using filter floss as I have a large roll or maybe a sponge.

Most closed cell foams are totally fine provided they don't contain an antimicrobial. Neoprene for one is perfect for quieting pumps and is probably even better in terms of material stability. You can get neoprene mat from foam shops or BRS. I used enolite as I had a bunch left over (I use it under my tank).

[lastlight]

Yeah the denser foams are better than floss of a more porous foam like an aquaclear insert style because those would trap a ton of crap in them and you'd likely not be rinsing the thing.

I use a mag 12 right now as my skimmer feed pump. it's been running for months and is a quiet hum but it has always sounded like there are little bubbles or grains of material bouncing around inside it. Maybe there are lol. It's certainly nothing you can hear 5 feet away tho.

[Baldy]

And mine I can definitely hear from 5 feet away. Its jot as bad as if you run a pump dry or anything, bit it sounds like its gargling air. I'll just let it circulate in the basement for a while and see what happens. Thanks for the replies guys