Hot enough for ya???

[Samw]

Currently 29.9C with one MH light on. So I have just turned off all lights now. Room temperature is 30.5C using the same thermometer. I guess the evaporative cooling on my tank is making it cooler than room temperature by a bit.

[OCDP]

I think the easiest solution for tanks without chillers and what not... just cut back your photoperiod. Turn the lights on in the AM , and off once it hits noon.. keep 'em off til later in the evening.. turn 'em back on again if need be. That's what I am doing.... 20g with 250w HQI in a bedroom and I am at 83-84... not too bad considering.

[rickjames]

Except for the fact that it is barely getting under 20C at night here. I wake up in the morning and the tank is still 83F, because the house doesnt even have a chance to cool down. How do you cool down a tank colder then the air?

Global warming i tell you... Gotta get central A/C by for next summer!

[Samw]

Originally Posted by rickjames

How do you cool down a tank colder then the air?

You can do that through evaporative cooling which is just having a fan blowing across the top of the water surface.

http://www.aquarticles.com/articles/...SettingUp.html

"Through the proper use of fans (evaporative cooling), you can usually drop a tank's temperature by a good 5 degrees. Fans are great! "

http://www.coralplantations.com/pages/heatissues.htm

"The effect of evaporative cooling is greater than most people realize. A small desk fan mounted above a tank blowing across the water can drop the temperature by 3 degrees or so depending on the tank volume. "

http://www.vividaquariums.com/troubleshooting.asp

It is possible to cool an aquarium by 5 or 6 degrees using this method of ventilation and evaporative cooling.