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Saki Hikari Koi
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158 Milner Avenue, Roosevelt Park, Johannesburg |
Shop hours: 9am - 5pm Mon - Fri, 09:30 - 15:30
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Kohaku Sanke Showa Chagoi Goshiki Asagi |
Ogon Shiro Utsuri Hi Utsuri Shusui Ochiba Shigure Kumonryo |
Bekko Kujaku Soragoi Goromo Pictorial Japan Japanese Terminology |
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Silent air air pumpsVirtually silent air air pumps Silent air pumps are by definition impossible.However, very quiet air pumps are a distinct possibility as the DY range demonstrates with class leading low noise operation. DY 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 DY 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).
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