Clip-on cooling fans

[loonz]

Hi, reckon some of us here who can't afford chillers have to resort to such fans...I wish to know how well they work. With a certain number of fans, how many degrees can they bring down the temperature of a say, a 3ft tank? Thanks for answering. With recent heat wave, my tank is going to 31C and boiling...

[jesperlam]

Hi loonz, currently i have a clip-on fan for my nano 1.5ft...without fan the temp will be ard 30-32 Degrees. With fan can reduce till 26-28 Degrees...And my tank is running on PL lights.

So if u're running on MH den fan won't help much.

Hope that helps

[typrobin]

i use the big ones....bigger than the normal pc fans...the brand is profantec....

my 3ft tank cools to less than 28degreeC now...seldom hit 28degreeC...of cos i am only using PL...

even with MH 2X150W + 2 X 36W PL, hottest was less than 29degreeC....

use 1 fan, positioned parallel to the water level, about 2inches away....

evaporation is 3-5ltrs per day....i top up as and when i am free, dun top up everything one shot!!!

when my MH is here,i'll use 2 fans, 1 to blow against the water and the other to draw out air.....might use both fans to blow on the water too, still deciding....

bad things:

1) very noisy

2) evaporation

i think if we can maintain the temperature at below 29, good enuf...unless u are into SPS.....

don't buy the ocean free brand (those that comes with 4-6fans), very weak and heard it spoils easily....go for the profantec one that i am using....good and efficient

[sunnymau]

i think AC fan is much strong compare with those DC fan with many head. DC is more expansive and not so effective although they are silent. i would recommand AC fan which cost me abt $30+, it bring my tank down by two degree. my tank size is 60cm x60cm x10cm(h).

but chiller is still the best

[loonz]

Thanks pple, fortunately i am not using MH (sour grapes..)...my lighting consists of 4x36w PL and 2x30w FL. How much on average are these fans then? Am thinking of getting a set of 4fans...retailing at about $65 at an LFS nearby...price ok?

[typrobin]

pls dun buy those kind of 4-in-1 fans....USELESS!!!!

not strong enuf....and expensive.....buy the AC type as recommended.....this is how i place my fan....i have a hood, so can't clip it on....

[typrobin]

pls dun buy those kind of 4-in-1 fans....USELESS!!!!

not strong enuf....and expensive.....buy the AC type as recommended.....this is how i place my fan....i have a hood, so can't clip it on....

[sunnymau]

Thanks pple, fortunately i am not using MH (sour grapes..)...my lighting consists of 4x36w PL and 2x30w FL. How much on average are these fans then? Am thinking of getting a set of 4fans...retailing at about $65 at an LFS nearby...price ok?

what u wish to buy is DC fan which i mention, no use one.

get what bro typrobin is using, cause abt $35 each. im using it too to cool my mh how big is ur tank?

[typrobin]

Thanks pple, fortunately i am not using MH (sour grapes..)...my lighting consists of 4x36w PL and 2x30w FL. How much on average are these fans then? Am thinking of getting a set of 4fans...retailing at about $65 at an LFS nearby...price ok?

hey bro, since u are using all these amt of light, y not change to MH....nothing beats MH and also nothing beats the heat of MH....

4X36W = 144W

2X30W = 60W

total 204W

change to a single 150W, change save on electricity bills too...

sell your PL and FL, might bring in some cash and get a cheap 2nd hand MH loh.....or get from viclite $150-160 only....

[19percula]

ya actually don really know wat the diff between the 4 in 1 cooling fan and those selling at sim lim tower?

for me i use the ones bought at sim lim

[typrobin]

i think i got mine at $28, if i dun remember wrongly, from AQ$#ST#R in yishun....most LFS should have them....

[loonz]

typrobin, hmm..so your fan is blowing directly onto the water and not across the surface...which is more effective actually? Or is it the same?

And where do i get these AC fans? I am guessing you have to DIY the part to attach to the tank

[typrobin]

DIY???hehehe i juz rest it on top of 2 pieces of wood....nothing spectacular....

i blow it directly on the water, never tried 45degrees b4....

using a fan, it cools by evaporation, juz like when we feel hot we perspire, when the sweat evaporates our body cools down, so i think by whacking the water directly, it will evaporate faster and thus cools better.....but of cos the better the cooling the faster the evaporation...i believe 26-27degreeC using fans can be done when the weather is better but anything lower than that is unheard of...

[SBS_Transit]

dont quite like fans, the water evaporate very fast, but no choice

[ReDDeviLs]

my tank is 5x2x2 on 6x38w

with FL blue

thought of changing to MH but worry about the heat also..

fan really can do the job?

[typrobin]

as i mentioned earlier, i did a test on MH before...2 X 150W for my 3X1.5X2ft(height) tank....

it served me well enuf.....cooled the temperature to max 29degreeC, it fluctuates around 28-29....and not forgetting i place the MH very close to the water, about 3-4inches away only....if u are kiasu, lift it 1 feet above water level....

maybe most pple won't believe me thinkin tat my tank is in an air-con room....but i swear by it.....no air-con room....i even went to the extend of closing all the windows in my whole house and tested it, results still acceptable...

[loonz]

Just gone out to get an AC fan (i think)...size about 5" by 5"...i placed it blowing across the top of the water surface...cooled it down by 1 degree thereabouts only...shucks ...

[typrobin]

shoot the wind directly on to the water like i did loh....juz a suggestion....maybe gotta wait for a while....

it takes about 6hrs to reach the min. temperature....

[loonz]

i wish i could, but the lighting is in the way.....DOH..

[ReDDeviLs]

sorry guys where to get the AC fan as recommended.. think of getting 2 of them to test with my PL first.

not that i dont believe in bro typrobin,but still wish to see it with my eyes..

[typrobin]

change to single MH loh....the will clear up lotsa space....hahahahah

[typrobin]

sorry guys where to get the AC fan as recommended.. think of getting 2 of them to test with my PL first.

not that i dont believe in bro typrobin,but still wish to see it with my eyes..

i have a spare one...if u want i can lent it to u until month end....so tat u can save some money....i stay in woodlands....pm me....

[loonz]

typrobin, a tempting idea, but at this point in time, too much trouble..ha..actually have a friend in the lighting industry that offered to make a MH fitting for me after he successfully made his own one...but i told him i'd wait till i get a bigger tank..hah

[sunnymau]

i got a spare one.

u wan? pm me