Mag 12 Noise

[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

[Delphinus]

Something to think about when you have too much flow and directing flow back into the sump, most pumps performance curves show that energy consumption is tied to flowrate and not head pressure. So, directing flow back into the sump instead of throttling them back is going to cost you more per month in electricity than simply throttling the output down with a valve (all you're doing is adding to the head pressure).

[Baldy]

Originally Posted by Delphinus

Something to think about when you have too much flow and directing flow back into the sump, most pumps performance curves show that energy consumption is tied to flowrate and not head pressure. So, directing flow back into the sump instead of throttling them back is going to cost you more per month in electricity than simply throttling the output down with a valve (all you're doing is adding to the head pressure).

That is a very interesting concept. I'm a second year electrician, and I have the setup to test this at the moment. I might put that to the test tonight

[Oxymoron]

http://www.bulkreefsupply.com/store/...ning-pads.html

Pop them in a ziplock bag and stick them in the sump

Stumbled across these the other day.