Quiet air pumps?

[KittyKat]

which brand do you think has the quietest air pump?

I use Aqua Air and they don't seem too bad... although not quite what i'd call quiet!

[toerag]

Kitty Kat...many years ago...there used to be an air pump callled "Silent Giant"...they were absolutely incredible....they were about the size of a 22 oz can of peas.....the motor was packed inside of this canister with sand.....they were very strong...you could run three tanks with undergravel filters and there was no noise and because of the weight they never vibrated...not sure what ever happened to the company.....gonna go "google" them now...but, now I don't use air pumps at all....

[Surface]

quiet and airpump are two words that dont go together, I have half a dozen different brands of air pumps and they all have a bit of a hum to them even if they are sitting on carpet. But if I had to choose the quietest one of all it would be my Whisper 20.

[-Rambler-]

I only use airpumps now to aerate RO/DI water for PWC and I do have some to power sponge filters for fry tanks, but I haven't used them for a while now. One thing to do besids put the pump on a sponge is to also make sure electric cord and airlines aren't touching tank stands and walls. The pump will be quiter by doing this. The pump vibrates the airline/electric cord as well and by silencing them it makes a huge difference. I don't remember the silent giant but I do remember in the late 70s early 80s the pumps where alot more quiet then todays. And deffinately more quiet then the older ones.

[Indigo Blue Fish]

I once remember hearing a rather clever method of silencing.
I'll relate, with a few tips of my own thrown in.

Get a bog standard pump to your requirements. Doesn't matter if it'll rattle the house down.

Get a rather large pickle jar. With lid.

One chunky bit of wide bore syphon tube - a few inches in length will do. And of course your airline.

Cut two holes in the lid - one a bit bigger than syphon, one a bit bigger than the airline.
Slide both pipes in so there is some inside the lid, and some out. The syphon one wants to be two inches in, two out. The airline one about two inches in, rest out.

Silicone around the pipes onto the lid - inside and out. This will affix and close gaps, adding strength.

Pop the pump onto the inside-lid airline. It should hold. Take plug off, thread wire through syphon. The syphon will allow the wire in, as well as air to flow through.

Pop the pump lid on the jar to check fit.
The gap UNDER the pump IN the jar, pop some cotton wool. (Support and silence)

Put an elastic band round the seam of the lid (helps reduce vibration) and a seam of silicone around the base of the jar. (To provide a cushion for it to stand on).

Link up with checkvalves - et voila - a silent pump!

[sharkdude]

another way is to put it in a box(such as a cookie/chocalate box) with as mcuh sponge as you can fit in ti but a air hole must be left to stop over heating



I use a thrmo filter that heats fillters and aerates so all i hear i aer bubbles

[andcon]

I greet warmly!
I apply the blower of air of firm the SECOH the series the SLL.
efficiency max 52 -75l / faces
pressure max 0,27-0.41 bar
it is very low and stately recommendations
andrzej

[Indigo Blue Fish]

Secoh? Ohh - I know! Yes, I hear they are very good too!

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