how to keep heat down

[dusterdan]

I have a 12 gallon nano cube, it seems as though I have a heat problem. At night the tempeture goes up to around 83 degrees, all that is on is 2 powerheads circulating water. then during the day with the light and fan on the temp goes down to around 80. With possibly going with metal halide lighting, I know the tank is going to get hot fast. Any way to get around not adding a chiller? If the chiller is the only way to cool it down, anybody know a good place to get one? thanks for the help!

Dan

[Avalanche1201]

you could try using a fan to blow across the top of the water and the light, that always help keep it down a few degrees

[mdrumm]

i use a pacific imports cl85 chiller. paid about 185$ for it. Worth every penny. Temp is constant 78 degrees.

[marc nichols]

If your temp is going up at night, your pumps + ambient room temp must be driving the increase. If you run your fan 24/7 and let your heater push the temp to its setting, you will resolve your problem.

My fan is timed with the lights during the winter and runs 24/7 during the summer. A water top off contends with the higher evaporation rate.

[sperry]

NanoTuners.com has a kit you can buy so you can run your fans all the time.
Fan Kit (http://www.nanotuners.com/product_info.php?cPath=25&products_id=278)

They also have an improved heat shield.
4.24 Heatshield (http://www.nanotuners.com/product_info.php?products_id=117)

[dusterdan]

On the Pacific imports chiller, what pump do you have circulating the water? Also how do you have it plumbed in? Any pictures would be helpful too. Thanks!

Dan