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Thread: Number of fans to cool a tank?

  1. #1
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    Number of fans to cool a tank?

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    hi all. tearing one of my 1.5ft due to leakage . intending to do up a 2ft tank. thinking of low tech though. how many fans should i use to cool the tank? considering the weather these few days is inexpected... the tank is only going to be full of moss and ferns.


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    Re: number of fans

    if im not wrong, the number of fans wont affect the temperature that much. instead it increases the evaporation rate..

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    Re: number of fans

    Quote Originally Posted by madnugget View Post
    if im not wrong, the number of fans wont affect the temperature that much. instead it increases the evaporation rate..
    im aware of the evaporation rate too . but i guess thats the only option that i got for now


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    Re: number of fans

    1 fan lower by 3 -4 degrees but 2 fans wont mean lower by 6-8 degrees. Evaporation is what removes the heat. More fans increases evaportaion rate but not the temp. I think this is what magnugget meant
    Cheers,
    JJ


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    Re: number of fans

    be it 1 fan or more..you temp in tank should range between 28-26 degrees..depanding on your ambience temp.More fan will not get you any lower than that except during colder mths of the year.

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    Re: number of fans

    it is highly dependent on tank surrounding temperature. Fan at best can reduce by 3 degree C, the number of fan does not really matter once you reach 3 degree drop. It may take 24 hours before you can get these 3 degree drop.
    -Robert
    Aquascaping is a marriage between Art and Farming
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    Re: number of fans

    Let say I already have 2 fans and it only cool down by 0.5 to 1.5 degC below ambient temperature at most. By addding more fans, will the water temperature drop further ?

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    Re: number of fans

    whats the temp? if the ambient temp is around 26 to 27 i dont think it will drop much further
    Cheers,
    JJ


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    Re: number of fans

    Quote Originally Posted by Wahlin View Post
    Let say I already have 2 fans and it only cool down by 0.5 to 1.5 degC below ambient temperature at most. By addding more fans, will the water temperature drop further ?
    It will not.

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    Re: number of fans

    thanks for the input people. okay if 1 fan can reduce the temp by max 2-3C, what brand is good enough?? my ambient tank temperature is about 28-28.5C without the fan


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    Re: number of fans

    evaporative cooling using fans is dependent on ambient air temperature and humidity levels. lower humidity allows greater cooling effect. unfortunately, it is rather humid here. so around 26~28 degrees is what you can expect to achieve.

    using more fans allows you to run each fan at a lower speed thus lower noise. a single high speed fan may do the job but it will be noisy and cause ripples on the water surface.
    thomas liew

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    Re: number of fans

    Quote Originally Posted by tawauboy View Post
    evaporative cooling using fans is dependent on ambient air temperature and humidity levels. lower humidity allows greater cooling effect. unfortunately, it is rather humid here. so around 26~28 degrees is what you can expect to achieve.

    using more fans allows you to run each fan at a lower speed thus lower noise. a single high speed fan may do the job but it will be noisy and cause ripples on the water surface.
    thanks for the input boss. i posted this thread because i saw a set which contains 4 fans, hence wants to know if it really got any benefits. cheers. Coincidentally, does anyone know if a 2 footer is stable enough in terms of temperature fluctuation? i know that smaller tanks do have problem in maintaining the temperatures..


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    Re: number of fans

    Try this.

    Cans (tm) Cooling Fan 3000. I bought this at Clementi Flourist. I will pm you the price. Good thing 1 is enough. But do note that having Fan means you have slight noise pollution. Dymax is quieter, performance wise...umm..I will still stick to Cans Cooling Fan.

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    Re: number of fans

    Dymax windy w-7, too quiet.. i can hear myself... lol.. i mean the water...
    20+10 Gallon Tank Link | Light55w(PL) and Light13w(PL) | Normal Filter800L/per.hr | 3xDriftwood

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    Re: number of fans

    Wil, you can hear water, means time for you to top up your water...lol. If you hear water sound caused by fishes, it means you forget to feed the fish and the fish are reminding and calling to you. =)

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    Re: number of fans

    I think I feed too much liao.. lol..
    20+10 Gallon Tank Link | Light55w(PL) and Light13w(PL) | Normal Filter800L/per.hr | 3xDriftwood

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    Re: number of fans

    Okay...get some rest this week, hell of a week. I need some body maintenance as well. Diaz will be checking out the fan over the weekend, I pm him already.

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    Re: Number of fans to cool a tank?

    Your place have air-con?

  19. #19
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    Re: Number of fans to cool a tank?

    how big is the fan?

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    Re: Number of fans to cool a tank?

    is using the laptop cooler fan another solution?

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