Lowering temp.

[patoloco]

What is good to lower them temp in a tank when the source of the heat is the water pump installed into the sump.

Normally, my water temp would stay at around 75ºF (room temp). When I installed the new filtering system with this new pump it raised in about 6 hours to 77º. At that time, it was uncovered. When I finished my hood and installed it, temp raised at around 80ºF, and have kept there. I drilled aroun 60 1" holes in the hood to allow for some heat escape, but didn't work. I'm thinking about installing computer fans into the hood to force air circulation.

80º can be fine with the fish I keep there, but I'd surely like to cool it down a bit. Any better idea?

 

[z71silverado98]

not sure how your sump is set up exactly, but if you could cause the incoming water do casade into the sump this would allow more contact to the air aswell as more agitation in the sump, dissipating heat as it bubbles.
the same would be true if you were to allow the output to cascade into the tank, but im not sure if you want a calm tank for Co2 or other reasons. Airstones will also help to lower temp, but i dont like them.

 

[pbrack]

Have you added any small fans on top of the sump or the lighting? It may help bring down the temperature a few degrees at the sources of heat (light and pump)