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12-03-2007, 04:45 PM | #31 |
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No wonder, I stay 2nd level HDB, all surrounded by buildings and flats. Can be quite warm and humid.
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15-03-2007, 01:07 AM | #32 | |
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If you're willing to go the DIY fan route, the quietest fan you can find will be the Sunon Maglev series of fans. As the name implies, it uses magnetic levitation instead of normal sleeve or ball bearing. In simple terms, the fan shaft is floating in air when spinning so no ball bearing are rubbing and creating noise. And these fans are supposed to last much longer and remain quiet throughout use compared to normal fans. More info can be found here : http://www.sunon.com.tw/english/wealth/tech/tech-05.htm BTW, I do not work for sunon or have any dealing with them. I'm just a happy user of this fan after having so many fans fail or get noisy after weeks or months of useage. I bought mine from Sim Lim Tower 5th floor. One of the shops facing escalator. I'm using 2x 40mm fans on my 1.5 ft. And they are certainly quieter then other fans I've tried. Other then this fan other tips for quiet fans : Bearing choice (Quiet to noisy): - Maglev fan - Sleeve bearing fan - Ball bearing fan (However Sleeve bearing fans although start out quieter then ball bearing fans, they start becoming noiser then ball fearing fans after a while. They also have shorter life. Remember for aquarium, they run 24/7. So still more woth to get ball bearing compared to sleeve. But of course Maglev still my favourite) Fan Sizes : - It's better to have 1 big 80mm fans than 2 small 40mm fans to achieve the same flow rate. If space allows. Fan Placement: - Place it as close to the water as possible. More effective then having it far away. - Angle it direct down towards the water instead of at an angle. (I know many will disagree with this.) But this is my personal opinion. But have to place it somewhere where there is most surface water movement. Like near the filter output. |
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15-03-2007, 01:29 AM | #33 | |
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Do you mean that using the bigger sized fan means water temp will be lower? I've got a small 9x9cam, 12 volt fan for my 2 feet and the temp stays around 28 degree. If i never on the fan and switch on my PL 55w light, the temp hits 30 deg. How i can get the 25-26 degrees some bros here have managed to hit? Thanks for any suggestions! Cheers. |
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15-03-2007, 10:46 AM | #34 |
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When you mentioned 40mm and 80mm, u meant the length of each blade or the total diameter of the fan?
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15-03-2007, 11:38 AM | #35 | |
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Bigger fans don't mean cooler. What i mean is to get the same amount of wind using 1 big fan is more silent then 2 small fan. With fan you can only get 2-3 deg lower than without fan. There is no way to lower 5deg with just fans. Those bro who gets 25-26 probably stay in high floor or their house is cooler. Also other then lights another culprit that heats up your tank is the pump / filter. Especially internal filter, all the heat will go into your tank water... |
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15-03-2007, 11:41 AM | #36 | |
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15-03-2007, 11:41 AM | #37 |
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15-03-2007, 11:43 AM | #38 |
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Oh, in that case, I'm using 11mm(4 inch) fan~
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15-03-2007, 09:16 PM | #39 |
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16-03-2007, 01:20 AM | #40 | |
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Well, next time you change water or do trimming feel the motor area, see how warm it is. Should be just slightly warm at most, especially for small one. But again, it is there 24hr a day generating that little bit of heat. |
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