air pump for CRS?

**gentle** · 24th Nov 2011, 19:01

i am currently cycling my 3ft tank - chiller connected but not turn on

just introduced an air pump and found that the water temperature actually increased by 0.8 degrees! this would certainly make the chiller work harder...

is it because i got a cheap air pump that produced more heat?
anyway to cool it down? use a long air tube?
is air pump essential for CRS tank?

**eviltrain** · 24th Nov 2011, 20:30

Originally Posted by gentle

i am currently cycling my 3ft tank - chiller connected but not turn on

just introduced an air pump and found that the water temperature actually increased by 0.8 degrees! this would certainly make the chiller work harder...

is it because i got a cheap air pump that produced more heat?
anyway to cool it down? use a long air tube?
is air pump essential for CRS tank?

What is the temperature of your tank water before you on the air pump?

What is the temperature at the place where your tank is?

Is it possible that you on the lightset at the same time?

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**Navanod** · 24th Nov 2011, 21:29

Air pump should not be dumping heat into the tank...very peculiar

**cheetf** · 24th Nov 2011, 22:20

One possibility is before you turned on your air pump, the water flow is minimal. But when you turned on the air pump the water mixed and hence the temperature increase.

**gentle** · 24th Nov 2011, 22:28

i had cycled the tank for 2 weeks and usually the temperature shown on my chiller is 26.0
then the day since i introduced the air pump the chiller shows 26.8 (the air pump didn't affect the flow of water)

i just learn that my chiller is not calibrated as the thermometer is showing about 29

but even after calibration i think the air pump will still raise the tank temperature

think i better check again...

**Xmant** · 25th Nov 2011, 08:11

Your chiller doesn't seem to performance like a chiller at all.

**Neondagger** · 25th Nov 2011, 09:26

what chiller you using. I using artica chiller. performance damn good. chill to 23 also no problems.

**gentle** · 25th Nov 2011, 12:03

i am still cycling my tank, so i set my chiller to 30 degrees so that it won't kick in (it is acting as an expensive thermometer for now)

i'm not saying that air pump heat overpowered the chiller - haha

just surprise why intrducing air pump apparently increased the water temperature

anyway i have just calibrated my chiller (with a real thermometer)

this morning reading was 28.3 (with air pump)

i have switched air pump off, will take the reading again tonight

**Neondagger** · 25th Nov 2011, 12:40

lol if you stay in singapore. your temperature will not reach above 30 degrees ba. so you can off your chiller and your chiller will not kick in at all
It sounds like your temperature sensor for your chiller is spoil. what chiller you using.

**Neondagger** · 25th Nov 2011, 12:42

Is your air pump submersible or not. I have 1 pump which as 2 outlet for my crs 2ft tank. 1 connect to a air stone and 1 connect to a sponge filter. no heat created by them. unless your airpump create hot air. you check if the air hot or not.

**stormhawk** · 25th Nov 2011, 12:47

What cheetf said is the most plausible explanation. The air pump should not contribute to the heat in the tank since they are not meant to be submersed in water like power heads. Since you are cycling the tank, why not turn on the chiller to see if it can cope with the 0.8 degree increase when aeration from the air pump is active.

**hyun007** · 25th Nov 2011, 14:23

Guys, he already said that his chiller is not switch, most probably cycling his tank since one does not want to waste electricity.

Different time and days have different temperatures.
Even if you have AC, it is not possible to have the exact temperature all the time, usually only approximately.
Also, if you have lighting or sunlight shining at the tank, it will also increase the temperature.

**Neondagger** · 25th Nov 2011, 14:57

I think 0.8 is not alot. a little change in room temperature would have this effect on the tank. just like when I on ac, my chiller kick in lesser, in the afternoon the chiller kicks in more. cause temperature differents

**gentle** · 25th Nov 2011, 16:43

i guess a picture paints a thousand words...

i took this photo in the morning - 28.3 degrees - after that i switched off the air pump

air pump is below the tank next to the canister (not visible in photo)

the tank is not exposed to sunlight nor air conditioning

photo.JPG

**cheetf** · 25th Nov 2011, 18:44

Originally Posted by Neondagger

lol if you stay in singapore. your temperature will not reach above 30 degrees ba.

Which part of Singapore do you stay? I have seen my tank temp reach 32C!

**binniez** · 25th Nov 2011, 20:51

Hmmm.. I believe that because the air pump actually draws air from the external atmosphere, when the air is pumped into the tank, it is the air which is the room temperature that you are experiencing. Meaning your tank temperature could be 26 degrees but because your room temperature is 30 degrees, the 30 degrees air that is pumped into your tank via the air pump might raise the temperature a little. But this is something that I believe your chiller can handle. Nothing to worry about. Just my 2 cents worth. Correct me if I am wrong. Hehe

**cheetf** · 26th Nov 2011, 08:46

Hmmm question of air or water is the better heat conductor.

**gentle** · 26th Nov 2011, 22:32

this morning the reading was 28.5 and for most of the day remains 28.7

so conclusion is that air pump doesn't increase the water temperature

i turned the air pump back on now and am not expecting a big increase

maybe the initial temperature reading increase was due to increase in room temperature