Silent air air pumps

Virtually silent air air pumps

Silent air pumps are by definition impossible.

However, very quiet air pumps are a distinct possibility as the HAP range demonstrates with class leading low noise operation.

HAP air pumps are built on diaphragm technology. This is the most effective way of delivering air into a pond as quietly as possible. It's not just humans who have to put up with the noise of an air pump but consider your Koi as well!

Pneumatic air pumps can sound like a jack hammer under the water. The clack of the piston hammering the air home is considerably amplified under water and this can cause Koi to steer well clear of the air piping and to avoid these areas of the pond.

The trouble is that because we humans are above the water, in most cases, we don't hear these effects. Our premier pond builder discovered this fact when diving to do some repairs in a Koi pond some time ago.

The HAP ramge of airpumps, using a diaphragm can move air down the air piping work noiselessly because the only mechanical contact that takes place with the air in the pump is via this rubber diaphragm which compresses the air in a similar fashion to our lungs. A pneumatic air pump on the other hand, although capable of creating much higher pressures (note that this does not mean a greater volume of air) does so by slamming a piston up and down a cylinder with associated pneumatic hammer (the noise created by the high speed cylinder squeezing the air in very quick successive cycles).

Air Pumps are not generally submersible...

Submersible air pumps and Koi ponds

Submersible air pumps are generally applicable only in very specialized operations, one of which is not Koi ponds. There are very few advantages, if any to using a submersible air pump in a Koi pond and there are several distinct disadvantages.

Firstly, an electrical supply would be necessary in order to power the submersible air pump under water. Aside from the unnecessary hazard that this causes to you and your Koi, imagine the maintenance if that is ever required.

The submersible air pump would have to be mounted somewhere in the Koi pond where it can be easily accessed. This means that the air line to which it is attached also has to be easily accessible. In the event of a failure, the maintenance repair work is orders of magnitude more complex and substituting the pump with another one is by no means as simple as if you had a Top Ponds air pump mounted neatly and conveniently as part of your filter system.

Koi keeping is difficult enough without complicating life without some very compelling reason to otherwise do so. Submersible pond pumps on the other hand are a completely different story and can be very useful in certain instances.