Cooling using fan

[Froggy]

Hi all,

Need to seek advice from all. I'm planning to use fan to cool my 3footer, due to the high evaparation rate; more topup will be needed. Will these fresh water topup cause any parameters to swing? I presume ph will be the first to be affected, how abt kh/alk, etc... Can i minimise these swing if i use the t.u.b.b.y which tops up slowly and constantly..

[tfrancis]

Well for my case I am topping it up every night with fresh tap-water and it seems to hold well.

I am using 9 DIY fans to cool the water.

I think the trick is not to get the water too salty.

[lightningstrike]

juz top it up wif dechlorinated freshwater or even better RO water. no one will top off wif saltwater as salt does not evaporate. only water does.

[Dazza]

well for my 5 ft tank i just top it up every 2 days with water fresh frm tap. I know some will jump at me but hv been doing this for yrs n no big harm.

[rainbowdarter]

ya..mee too top up every 2 days with declorinated tap water (Standby inside big container) Bo Pien....cant afford chiller.

[FuEl]

I on my fan 24/7. Top up with kalk mostly...only switch to pure freshwater when calcium exceeeds recommended values.......

[Terryz_]

Err.. qns... will there be side effect if calcium level too high...

[mAriNe_enthusiast]

I top up with water left overnite...Dun think it'll cause much changes to water parameter except salinity.

Top up with kalk mostly...

So u mix kalk with the freshwater and use as top-up water?

Will cause any Ph swing or Kh swing?

[AquaRa]

just leave tap water overnight and use it to top up

[mingwen1611]

abit though... paiseh... but ask you guys ar.... wad is the best brand for fans?

[mingwen1611]

erm... is it ok to put the fan in the sump?

[ryz]

I'm thinking of using fans as well. What type of fans do I use?? Can someone post a link, picture or something. I would need a few Big fans As I using only fans to cool my 3 ft with 2 ft sump using MH. Details on where to get fan etc will be appreciated as well. I want big ones that is will sufficently cool my water. Gonna use 150W MH for my 3 feet.

[mingwen1611]

how long do you guys on your fans? 24hrs or when the temperature is not rite?

[ryz]

I reckon the same time the lights are on. Set on timer for both to on at certain time etc.

[ben]

MH? dont need to think using fan. It wont help. MH is too hot and u end up spending more expensive and too many fans still not very good.. suggesting chiller to u if using MH

[ryz]

cannot afford leh. thought of using like 3 fans to cool my water. Blowing directly at the water surface of sump. You tried before? How you know?

[cjack]

I have a 15" inch tank and the temperature is always very high at 29/30 degrees celsius. What is the best way to reduce the temperature? Will one of those small clip-on fans help?

[ryz]

yea they do help... But they have to be blowing at the water surface and not too far from it... Evaporation rate will be high..

[typrobin]

i'm using a clip-on fan, slightly bigger than a computer fan, bought in LFS.it actually helps to bring down the temperature by 3-4 degree C. i point it directly at the surface of my main tank about 3inches away from the surface.cheap and good, but i need to top up. about 3-4ltr more water compared to no fan.i dunno why but my temperature is always @ 30degree C(day or nite) without fan, so if no fan is included, i probably haf steamed fish after a hot afternoon with my lights on.

[ryz]

30 degree celcius??? U have too many appliances in the water?? Like Powerheads etc??

[AquaRa]

too much calcium, if i'm not wrong, will cause alkalinity to change

[ryz]

Calcium affect Carbonate Hardness... Thus increasing the dKH

[ervine]

MH? dont need to think using fan. It wont help. MH is too hot and u end up spending more expensive and too many fans still not very good.. suggesting chiller to u if using MH

Eh not really.. I'm using 250W on a 2.5x15ft without chiller, so far corals and fishes still okay... but take heed my fan is a table fan, not those small clips ones... and my MH is ventilated (i.e. not a hood)

[shawncel]

Eh not really.. I'm using 250W on a 2.5x15ft without chiller, so far corals and fishes still okay... but take heed my fan is a table fan, not those small clips ones... and my MH is ventilated (i.e. not a hood)

Using a 250W MH without a chiller and just a table fan, what temperature are you getting?

[typrobin]

30 degree celcius??? U have too many appliances in the water?? Like Powerheads etc??

no leh, 1 return pump and 1 skimmer pump?? i tot quite standard...oh yah i juz added another pump for current in the main tank...but the temperature was already 30 degree C before i added the latest pump....still thinking of ways to reduce temperature....