How cool is cool

[Nman]

Hi everyone
H Is anyone using a chiller fan that points a the surface water to lower water temp . And does it work and how much does it reduce your tank temperature. Iam running a native tank and it runs at 20 but I need it to be at least 15 or under . I know a chiller would do it but the price of them is not cheap. Any info or help would be appreciated. Thank you

 

[Garf]

Hi everyone
H Is anyone using a chiller fan that points a the surface water to lower water temp . And does it work and how much does it reduce your tank temperature. Iam running a native tank and it runs at 20 but I need it to be at least 15 or under . I know a chiller would do it but the price of them is not cheap. Any info or help would be appreciated. Thank you

You’ll struggle, just with a fan. When it gets really warm like last year and the fan has little/no effect I resort to air conditioning the room, and that just about kept the tank at normal reef temperatures. 15C would be a bigger battle.

 

[Townes_Van_Camp]

I can shave a couple of degrees F with a fan maybe 2 or 3. It takes a long while to do and evaporation is nuts when it runs. My example would be a 120mm noctua case fan on a 14g AIO.

 

[Nman]

I can shave a couple of degrees F with a fan maybe 2 or three. It takes a long while to do and evaporation is nuts when it runs.

You’ll struggle, just with a fan. When it gets really warm like last year and the fan has little/no effect I resort to air conditioning the room, and that just about kept the tank at normal reef temperatures. 15C would be a bigger battle.

So it looks like I am not getting away from a chiller money

 

[Alexraptor]

Unless you're keeping the tank in a room that is 15 degrees, then the laws of thermodynamics says no. The only realistic way you can get below room temperature, is by way of active heat exchange, aka a chiller.