Reply With QuoteNeed some info from ppl regarding cooling fans...
How many fans will I need to lower the temp of a six foot tank (~550 litres) from 31/32 celcius to 27/28 celcius?
Resistance is futile, you will be administrated!
Need some info from ppl regarding cooling fans...
How many fans will I need to lower the temp of a six foot tank (~550 litres) from 31/32 celcius to 27/28 celcius?
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
Resistance is futile, you will be administrated!
Need some info from ppl regarding cooling fans...
How many fans will I need to lower the temp of a six foot tank (~550 litres) from 31/32 celcius to 27/28 celcius?
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
Resistance is futile, you will be administrated!
Need some info from ppl regarding cooling fans...
How many fans will I need to lower the temp of a six foot tank (~550 litres) from 31/32 celcius to 27/28 celcius?
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
Resistance is futile, you will be administrated!
Need some info from ppl regarding cooling fans...
How many fans will I need to lower the temp of a six foot tank (~550 litres) from 31/32 celcius to 27/28 celcius?
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
Hi vinz,
I have 2 x 3 inch dc fans running for my 6 footer 24 hours, & the temperature hovers around 27 - 28 deg. C, depending on weather.
Water evaporation rate , 1-1.5 inches a week.
Resistance is futile, you will be administrated!
I'm curious, does everyone run their fans 24hrs a day?
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
I am running 3 x 12v (8cm) fans on my 8x2x2 tank. It can get pretty cool here in Oz so it only goes on when my MH lights are on (7hrs). I do lose about 6 litres a day through evaporation. The tank is partially covered.
mine is 1.5ft with 1 fan 24 hrs ON cos with hook & 1L evaporation per day.
if ON/off with the light timing, temp. raise even after lights OFF.
My former 3.5ft was had 6 DC fans which was on only during lighting period. Evaporation was 1.5l a day. Before that, I used 2 AC fan which was like 2L a day. My tank was really hot as it was covered.
Suggestion:
You can get 1 wall mounted fan to blow your 6ft. I think that was what Simon did initially.
and u can use it for yrself too
Resistance is futile, you will be administrated!
Thanks for the replies guys...
Been mulling over this for a few days. Maybe someone can give me a bright idea.
Problem with my tank is it has to be covered cos of the arowana. I can't mount the fans at the edge of the covers because of the 3 inch bracing all around the walls. If I mount in the middle, it blocks the lights.
One possibilty is to build some ducting and blow the air thru the existing holes for filter plumbing.
Been reading thru APD, rec.aquaria, etc... some ppl direct the fans at the lights instead of the water and manage to bring water temps down.
I'm wondering what's the real cause of heat in my tank. The glass covers get quite hot from the lights... so could it be heat transfer from covers->air->water? Or just the lights shining on the water itself? I'm wondering if I blow at the glass and lights, what the effect will be.
Any physics, thermo, material experts can shed light on this?
Thanks.
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
glass retains heat in, if u dun realise that, remember next time when u go home after the sun is blazing into yr room...
vinz, y dun u cut a few holes on the cover and fix fans on them? best is to provide fan to extract hot air and as well as provide fresh air into the tank
Resistance is futile, you will be administrated!
Simon,
The lights are 6 inches above the glass. I can't mount fans on the covers without blocking the lights.
I know glass retains heat. I'm wondering what's heating up the air and water under the glass. Is it due to the lights shining on the water or heat transfer from glass to air to water. Touching the glass, I'd guess the they get heated up to the high 30s celcius when the lights are on.
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
ohhh.. i have to see the lights and yr cover to give a suggestion, take a pic...
If you are using fluoroscent lights, are you able to mount the ballasts somewhere else? The wiring is relatively simple. Its the radiant heat that comes out from the ballasts that generate the most heat.
Resistance is futile, you will be administrated!
Bedlam, I'm using 12x36w PL lights with 8 electronic ballasts. The lights generate much more heat then the ballasts. Anyway, the ballasts and lights are not enclosed under the covers but suspended 6 inches above the glass covers. I doubt it's heat transfer from lights->air->glass->air->water.
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
I have a 3ft light(4x36W)set which I removed the 2 side covers and install a DC fan on 1 end. Hot air will escape from the other end when lights are on. The other AC fan blow across gap btw light and water. Mine is a 2 1/2 ft tank and temp maintain around 26-27C. Be careful not to splash water into the electrical part of light though.
could be the heat from the filters motor.
i have a 2' tank which have a internal filter, no lights and no cover. the temperature was about 29-30 deg.
when my fishes started jumping out, i covered with undergravel filter trays. i noticed that the temperature increased to about 32 deg. so i removed the covers and the temperature drops back to 29-30deg.
i have 4 80mm dc fan for my 2 1/2' planted.
keeps temperature around 28 deg if fans are switched off in sync with lights.
if fans are switched on for 24hrs, temperature will be about 27 deg in the morning and 28 deg at night.
thomas liew
On the topic of DIY fans, can anybody tell me where to get those metal clips to mount the fans?
Does those shops at Kelantan Lane sell them?
Appreciate your help.
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