Who makes the quietest external pumps?

[tank125]

BTW those mags won't cut it for that head pressure anyway.

 

[rdefino]

What do you mean "they make noise if run as dry application". I will be using these in the sump, not external.

Also, I will be using a canister filter, but that will have it's own pump. I was thing a mag 12 or 18 also, That will also be internal in the sump.

 

[VLDesign]

Reeflo Hammerhead for me. about 4200 GPH through 12' head and uses less power than any other pump out there.

 

[rdefino]

I have a Reeflo barracuda and I can hear it 2 floors up.

 

[rdefino]

Should I do a separate pump for return each line? On the blueline, what does the -X stand for.

For instance: http://www.championlighting.com/product.php?productid=18054&cat=485&page=1

 

[rdefino]

One other thing. When I measure for head loss, to I just count the distance from the pump to the tank. Or, do I count the line from the sump to the pump then onto the tank?

Thanks

 

[tank125]

X = High Flow/Low Head - these are quieter and less watt/gph, but head is a lot less

The Hammerhead and Barracuda are different pumps - different pressure, difference in noise

Mags being loud. You can run a Mag dry (externally) or internally, your title says "what.... external..." You go on to post that you want to use Mag 12 or 18, so, b/c of your title I assumed that you would be using the Mags EXTERNALLY, in which case, they always make an annoying noise.

No, you do not count the distance from Sump to Pump, flow must be entirely unobstructed when using these pumps, they are not suction pumps.

 

[VLDesign]

If you can hear your Reeflo pump that far away then you most likely have a bearing failure. "If the bearings start failing, you will hear it loud and clear." - Reeflo Tech

 

[rdefino]

So if I don't count the distance from the sump to the pump, then I screwed up. Because I did count it. So my distance from the pump to the tank is 10ft I always thought it was 14ft. Now I would use flexible lines with 1 ball valve each.

I punch in at this head loss calc: http://www.reefcentral.com/calc/hlc...Couplings=0&CheckValves=0&Exits=1&Entrances=1

10ft vertical
3/4 line
blueline HD 40
1 ball valve

and I get 495GPH

Now I'm looking at use 2 of these pumps, 1 for each return. Doesn't seem like it's enough.

I made some calls and was being told that would be enough: 1 for each return or 1 HD 70 for both. Is that right?

thanks

 

[qumqats]

Is this loud pump plumbed all the way with hard PVC pipe? It could be that the hard pipe is passing the vibrations from the pump into something that is acting like a soundboard and amplifing the sound.

I had one aquarium that was drive me crazy until changed 1 foot of the PVC out with flex tubing. I can't even hear the pumps anymore ( although its a loud room with other stuff running ).